2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3

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2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3

Postby MrCyberdude » Thu Apr 15, 2010 12:24 am

EDIT: This thread was written before the Readynas group had recognized and addressed the WD Advanced Format HDD's. An issue that remains to this day is the massive LCC(Load Cycle Count) increases due to the original HDD Firmware.
I believe the end of year 2012 WD Red drives address most of the issues that plagued the WD20EARS and WD20EARX but I have not confirmed this.

The LLC (Load Cycle Count) for a majority of my drives has now approached 3Million. Yes Three Million.

There appears to be a New WD20EARS-00MVWB0 which has 3 Platters. As yet untested. http://forums.vr-zone.com/hardware-aren ... etter.html

WDidle3_1_05.zip info works with WD20EARS HDD's viewtopic.php?p=233472#p233472

WD20eaRs HDD's 4KB Alignment issues appears to be FIXED with firmware 4.2.12-T9 viewtopic.php?p=238394#p238394
The SPARC 4KB Fixed Alignment firmware version is looking to be done by July 2010 as mentioned here. viewtopic.php?p=242472#p242472

2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER(Time Limited Error Recovery), LCC(Load_Cycle_Count) info

After reading a fair bit online about the new WD Caviar Green/GP HDD's by WD such as the WD20EARS and their newish 4k sector size,
I am left wondering if the ReadyNAS firmware(existing or Beta) has been updated for this new HDD Sector design?
Could one of the JEDI or anyone else please comment on the following information?

Sorry for what appears like a jumble of information following but its hard to know where to start,
when all i really want is for it to be on the HCL as it is the only WD HDD commonly available here in Melbourne Australia.

This is a very good clear explaination about the 4096B Sector size that replace the historical 512B size
http://www.anandtech.com/show/2888
With the emulation of 512B sectors, there’s the risk that a partition could be misaligned compared to the 4K physical sectors - where it would be unwittingly started in the middle of such a sector. As a result, the clusters of a file system on that partition would end up straddling 4K sectors, which would cause performance problems.
In order to solve the misalignment issue, Western Digital is offering two solutions. The first solution for correcting misaligned partitions is specifically geared towards Win 5.x, and that is an option on the drive itself to use an offset. Through the jumpering of pins 7 and 8 on an Advanced Format drive, the drive controller will use a +1 offset, resolving Win 5.xx’s insistence on starting the first partition at LBA 63 by actually starting it at LBA 64, an aligned position. This is exactly the kind of crude hack it sounds like since it means the operating system is no longer writing to the sector it thinks its writing to, but it’s simple to activate and effective in solving the issue so long as only a single partition is being used. If multiple partitions are being used, then this offset cannot be used as it can negatively impact the later partitions. The offset can also not be removed without repartitioning the drive, as the removal of the offset would break the partition table.

Western Digital Advanced Format What WD have to say which is not very helpful when it comes to linux.
http://www.wdc.com/en/products/advancedformat/index.asp

I have read that TLER is enabled on the WD20EARS. Can anyone here confirm(x seconds) as info is conflicting?
Also the old HDD utilities for spinup and TLER are no longer supported by WD for the EARS drives.

Knowledge Base WD Caviar Green / GP
http://support.wdc.com/product/kb.asp?g ... 08&lang=en

From what I have read do not use the 7-8 Jumper for XP compatibility mode due to more than single partition issue.
Jumper Settings WD20EARS
http://wdc.custhelp.com/cgi-bin/wdc.cfg ... ed=#jumper

ReadyNAS related Fix? Is this already implemented?
Linux Fix according to WD knowledge base
http://wdc.custhelp.com/cgi-bin/wdc.cfg ... faqid=5357
Problem: The Load/Unload counter for S.M.A.R.T Attribute 193 continues to increase under some distributions of the Linux Operating system.
Affected Models: WD20EADS, WD20EARS, WD15EADS, WD15EARS, WD10EADS, WD10EARS, WD8000AARS, WD7500AADS, WD7500AARS, WD6400AADS, WD6400AARS, WD5000AADS, WD5000AARS
some implementations of Linux, for example, are not optimized for low power storage devices and can cause our drives to wake up at a higher rate than normal.
Solution:

The number of systems using such applications and utilities is limited and customers can resolve this symptom by optimizing their systems with the following three options depending on requirements.

Do not wake up the drives unnecessarily every 10 to 30 seconds or so, thereby gaining substantial power savings and eliminating excess activity. Increasing logging to every 2 minutes would result in 525,600 minutes per year or 262,800 cycles per year. Increase to 5 minutes and cycles would not even be a factor.

a. Linux users: Decrease the logging message

i. Examine your /etc/syslog.conf file for unnecessary logging activity and to optimize its performance. If you don't want to log any system activity, consider disabling syslogd and klogd entirely; or, at the very least, minimize the amount of logging your system performs. You can also prefix each entry with the minus sign (-) to omit syncing the file after each log entry. This will log anything with a priority of info or higher, but lower than warning, to /var/log/messages or /var/log/mail without needing to sync to disk after each write. Since we want to keep all messages with a priority of warning, this will be logged to a different file without disabling disk syncing (to prevent data loss in the event of a system crash).
*.warning /var/log/syslog
*.info;*.!warning;mail.none -/var/log/messages
mail.info;mail.!warning -/var/log/mailii. Another item to be aware of is the -- MARK -- messages that syslogd(8) writes. This will affect your hard drive inactivity settings. You can simply disable this by running syslogd(8) with:

if [ -x /usr/sbin/syslogd -a -x /usr/sbin/klogd ]; then
# '-m 0' disabled 'MARK' messages
/usr/sbin/syslogd -m 0
sleep 1
# '-c 3' displays errors on console
# '-x' turns off broken EIP translation
/usr/sbin/klogd -c 3 -x
fi
b. Modify OS power management timers in control panel

Disable Advanced power management using standard ATA command (Uses more power as turns off all low power modes but results in no load/unload cycles)

Linux users add following (hdparm -B 255 /dev/sdX where X is your hard drive device)
ATA users can disable APM usually controlled via BIOS and/or OS.ATA users can disable APM usually controlled via BIOS and/or OS.

Set Idle3 to max time (effectively turns off load/unload power saving feature thus will use more power) per below link

Any Links I have missed please add, especially form here.
Last edited by MrCyberdude on Fri Nov 09, 2012 7:46 pm, edited 6 times in total.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Tue Apr 20, 2010 7:29 pm

Well a week on I have installed 6x2TB WD20EARS HDDs into A ReadyNas Pro Pioneer and Its running fine for the moment,
with the exception of the LCC (Load Cycle Count) which is rising too fast for anybodys liking.

I read somewhere that the WD20EARS is designed for around 1,000,000 LCC and at the rate of around 3000 per day thats 1000000/3000=333.3' Days for design life failure..
A guesstimation forcast of less than a year before harddrive failures.

NOT GOOD! and NOT Acceptable!!
Who has the solution, Netgear, infrant or Western Digital?

Linux Fix according to WD knowledge base
http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faqid=5357
Problem: The Load/Unload counter for S.M.A.R.T Attribute 193 continues to increase under some distributions of the Linux Operating system.

Solution:

The number of systems using such applications and utilities is limited and customers can resolve this symptom by optimizing their systems with the following three options depending on requirements.

Do not wake up the drives unnecessarily every 10 to 30 seconds or so, thereby gaining substantial power savings and eliminating excess activity. Increasing logging to every 2 minutes would result in 525,600 minutes per year or 262,800 cycles per year. Increase to 5 minutes and cycles would not even be a factor.

a. Linux users: Decrease the logging message

i. Examine your /etc/syslog.conf file for unnecessary logging activity and to optimize its performance. If you don't want to log any system activity, consider disabling syslogd and klogd entirely; or, at the very least, minimize the amount of logging your system performs. You can also prefix each entry with the minus sign (-) to omit syncing the file after each log entry. This will log anything with a priority of info or higher, but lower than warning, to /var/log/messages or /var/log/mail without needing to sync to disk after each write. Since we want to keep all messages with a priority of warning, this will be logged to a different file without disabling disk syncing (to prevent data loss in the event of a system crash).
*.warning /var/log/syslog
*.info;*.!warning;mail.none -/var/log/messages
mail.info;mail.!warning -/var/log/mailii. Another item to be aware of is the -- MARK -- messages that syslogd(8) writes. This will affect your hard drive inactivity settings. You can simply disable this by running syslogd(8) with:

if [ -x /usr/sbin/syslogd -a -x /usr/sbin/klogd ]; then
# '-m 0' disabled 'MARK' messages
/usr/sbin/syslogd -m 0
sleep 1
# '-c 3' displays errors on console
# '-x' turns off broken EIP translation
/usr/sbin/klogd -c 3 -x
fi
b. Modify OS power management timers in control panel

Disable Advanced power management using standard ATA command (Uses more power as turns off all low power modes but results in no load/unload cycles)

Linux users add following (hdparm -B 255 /dev/sdX where X is your hard drive device)
ATA users can disable APM usually controlled via BIOS and/or OS.ATA users can disable APM usually controlled via BIOS and/or OS.

Set Idle3 to max time (effectively turns off load/unload power saving feature thus will use more power) per below link

1. Does anyone know if ReadyNAS or WD has a related Fix?

2. Is this already implemented in a ReadyNasPro beta firmware or elswhere?

3. Can this be made as a Selectable option in FrontView (Please)?

4. Can the Jedi (anyone here) confirm/deny the use of WDidle3_1_05.zip or other tools as working with WD20EARS HDDs in the ReadyNasPro?

http://support.wdc.com/product/download.asp?groupid=609&sid=113&lang=en

Some comment or links please...
Last edited by MrCyberdude on Fri Nov 09, 2012 7:38 pm, edited 1 time in total.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby claykin » Tue Apr 20, 2010 8:00 pm

Too bad you didn't read the following thread before purchasing WD20EARS disks.

viewtopic.php?f=24&t=39737

Can you return them to your reseller?
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Wed Apr 28, 2010 2:09 am

claykin wrote:Too bad you didn't read the following thread before purchasing WD20EARS disks.

viewtopic.php?f=24&t=39737

Can you return them to your reseller?

I actually spoke with Netgear directly about the WD20EARS and was told that the drive would be ok
I especially spoke to netgear about the 4k cluster size and about possible mis-alignment problems in regards to WD's new Advanced Formating and they said no problem....

I'm not so sure as I'm only getting 22MB/s writes (8Gb file copy) with jumbo frames on Giga LAN through a netgear GS108 but I do get 75MB/s reads for a 8GB file copy over CIFS while running XRaid2 dual redundancy.

The LCC was going to be the issue long term as Western Digital states 1 Million cycles life when currently i am projecting 2-3 years for the drives as its looking like over 300,000 per year guaranteed.

Unfortunatly the spec page from WD state otherwise.
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701229.pdf
Load/unload cycles 300,000
Does this actually=LCC ?

http://www.wdc.com/en/products/products.asp?DriveID=773


I also read somewhere that the WD20EARS does have TLER (time limed error recovery) which was in contrast to wiki, but wiki is not always right.

In reply to PM
MrCyberdude wrote:Hard to answer right now as I'm still migrating 6Tb of data across from one NAS to the readynaspro.

Hostname: ReadyNasPro
Model: ReadyNAS Pro Pioneer Edition [X-RAID2]
Serial: 1YA59CR?x?x?x
Firmware: RAIDiator 4.2.9
Memory: 1024 MB [4-5-5-15 DDR2]
IP address 1: 192.168.1.111
IP address 2: Not Connected
Volume C: Online, X-RAID2, 6 disks, 85% of 7413 GB used

I am running 6 x WD20EARS with jumbo frames and the jumbo does make a difference.
and they seem steady for the moment, I do feel that the RNPP does need a ram upgrade.
Thats next.

I'm feeling that running XRaid2 with 2 x redundancy might be significantly slower than single redundancy. I didn't really research as I needed double redundancy and that was that as my budget was limited....
Hmmmm its hard to say limited budget and $3400 in the same breath,
but u get what i mean. RNPP 8 x WD20EARS HDD

With Win7 and netgear GS108 Jumbo and using CIFS,
I'm getting around 25 MB/s for files less than a gig so I'm thinking its memory related.
Because copying a 7.79 GB (8,370,782,376 bytes) file to the NAS takes 6:20 secs or 20.5 MB/s and 1:55 secs from the NAS to the Win7 PC so 67.7 MB/sec

20.5 MB/s to NAS
67.7 MB/s from NAS

=======================
SMART Information for Disk 1
Model: WDC WD20EARS-00S8B1
Serial: WD-WCAVY258?x?x?
Firmware: 80.00A80

SMART Attribute

Raw Read Error Rate 0
Spin Up Time 8691
Start Stop Count 21
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 252
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 19
Power-Off Retract Count 13
Load Cycle Count 9313
Temperature Celsius 40
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0

ATA Error Count 0
=======================


actually did the copy again when my system wasn't doing other tasks and got
copying a 7.79 GB (8,370,782,376 bytes) file to the NAS took 5:55 secs or ~=22 MB/s

and 1:40 secs from the NAS to the Win7 PC so 77.9MB/sec i.e.~=7790MB/100secs

22.0 MB/s write to NAS
77.9 MB/s read from NAS
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby mdgm » Wed Apr 28, 2010 2:14 am

I still don't like the look of that Load Cycle Count. I still wouldn't recommend using WD Green disks because of that.

You can try to use the WDIDLE3 utility but it will void the warranty of your disks, I believe and may damage them.
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Wed Apr 28, 2010 4:22 am

mdgm wrote:I still don't like the look of that Load Cycle Count. I still wouldn't recommend using WD Green disks because of that.
You can try to use the WDIDLE3 utility but it will void the warranty of your disks, I believe and may damage them.
EDIT: WDIDLE3 will not void your warranty as per HanSolo and WD conversation.

I tend to agree about not purchasing these drives in future,
but in Melbourne that was all they had and I had the old x6/600 lose a drive so i bit the bullet and got the ReadyNasProPioneer RNPP that I am now having serious thoughts about taking back for a refund.
I did speak to netgear and they confirmed the WD20EARS and Advanced Format with their top level engineer.
I specifically asked about 4k cluster size and Advanced Format mis-alignment performance issues.

Question @mdgm.
This seems slower than expected... Is this normal for RAID Level X-RAID2, 6 disks (with dual redundancy).???
22.0 MB/s write to NAS
77.9 MB/s read from NAS
Last edited by MrCyberdude on Thu May 20, 2010 11:57 am, edited 1 time in total.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby mdgm » Wed Apr 28, 2010 4:34 am

MrCyberdude wrote:but in Melbourne that was all they had

There are drives on the HCL that you can purchase in Melbourne.

MrCyberdude wrote:Question @mdgm.
This seems slower than expected... Is this normal for RAID Level X-RAID2, 6 disks (with dual redundancy).???
22.0 MB/s write to NAS
77.9 MB/s read from NAS

I don't have a Pro yet, but I'd like to get one. There are a number of factors which can effect speeds such as the performance settings you've made in Frontview, the speed of the hard disk in your computer, processor speed etc., what you are transferring e.g. large or small files? There is also other traffic on the network and other tasks being performed by the ReadyNas and I'm sure some other things I haven't mentioned to take into account.

Anyway, the Definitive Guide although it doesn't have speeds for dual-redundancy (it does have speeds for RAID-6) suggests that the Pro is capable of fairly similar read/write speeds (well a lot more similar than what yours are). Your read speeds look fairly good (not knowing your setup), but the write speeds do look a bit low.
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Wed Apr 28, 2010 5:02 am

There are drives on the HCL that you can purchase in Melbourne.
I did speak to netgear and they confirmed the WD20EARS and Advanced Format with their top level engineer.
Not at a reasonable price, not when you need 8 x TheSameTypeBrand, Not when its nearly a 400Km return trip.

From above post
actually did the copy again when my system wasn't doing other tasks and got
copying a 7.79 GB (8,370,782,376 bytes) file to the NAS took 5:55 secs or ~=22 MB/s

and 1:40 secs from the NAS to the Win7 PC so 77.9MB/sec i.e.~=7790MB/100secs

22.0 MB/s write to NAS
77.9 MB/s read from NAS
I had trouble pinning down X-RAID2, 6 disks (with dual redundancy), any links you can name?
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Sun May 09, 2010 9:07 pm

After installing this add-on HDD internal benchmark - debug - test - CIFS - NFS add-on found here in its first release for the x86 versions http://www.readynas.com/contributed/super-poussin/PRO-Bonnie_1.1.bin
Code: Select all
Version      1.96   ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
ReadyNasPro      2G   760  88 20656   4 17189   4   734  55 147995  26 218.3   3
Latency              9958us    2174ms    1951ms    1518ms     101ms     100ms
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
ReadyNasPro     256   239  99 302797  99 21390  19   259  99 314931  99   325  49
Latency               406ms     664us     432us     444ms      60us    4932ms
Mon May 10 02:51:10 EST 2010 HardDisk Test Results are available !.
Mon May 10 02:51:10 EST 2010 DD Result:91.5MB/s
Mon May 10 02:51:10 EST 2010 DD Result...
Mon May 10 02:49:26 EST 2010 Please Wait...
Mon May 10 02:49:26 EST 2010 DD Test...
Mon May 10 01:55:53 EST 2010 Please Wait...
Mon May 10 01:55:53 EST 2010 Disk Benchmark...
Mon May 10 01:55:51 EST 2010 Bonnie service has been started.
Sun May 9 23:54:32 EST 2010 The Bonnie Add-on has been successfully installed.
===
Code: Select all
1.96,1.96,ReadyNasPro,1,1273419028,2G,,760,88,20656,4,17189,4,734,55,147995,26,218.3,3,256,,,,,239,99,302797,99,21390,19,259,99,314931,99,325,49,9958us,2174ms,1951ms,1518ms,101ms,100ms,406ms,664us,432us,444ms,60us,4932ms
1.96,1.96,ReadyNasPro,1,1273419028,2G,,760,88,20656,4,17189,4,734,55,147995,26,218.3,3,256,,,,,239,99,302797,99,21390,19,259,99,314931,99,325,49,9958us,2174ms,1951ms,1518ms,101ms,100ms,406ms,664us,432us,444ms,60us,4932ms===
4092528+0 records in
4092528+0 records out
2095374336 bytes (2.1 GB) copied, 22.909 seconds, 91.5 MB/s
This test apeared to take much longer (1 hour) than it should of and I personally believe it is due to the 4k cluster overlap issues with Advanced Format.

I also think I need DD results for each individual HDD, to help pin down a single drive or highlight that its all of them.

Can someone else who has these HDD's please give this add-on a try. The add-on does not require any changes to SSH.
After it has finished running.... Maybe 1hr unit the Status Log states the Speed and test completed.
The results will be in a folder called benchmark in the ReadyNasPro which can be accessed via command prompt running of
Code: Select all
net use P: \\ip-of-readynas\c /user:admin
and then going to P: Drive on My Computer.
Once you have copied the benchmark folder out to desktop remember to right click on P: drive and Disconnect the Mapped network Drive.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby emonkia » Wed May 12, 2010 10:56 am

Code: Select all
Version      1.96   ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
nas-05           8G   302  99 212202  71 107321  26  1302  99 277330  34 942.3  24
Latency             29253us     152ms     145ms   18990us   41966us     394ms
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
nas-05          256 25163  74 253426  99 19293  48 28168  81 325141  99  8949  23
Latency               177ms     887us     369ms     120ms      75us    1072ms

16146896+0 records in
16146896+0 records out
8267210752 bytes (8.3 GB) copied, 59.0743 seconds, 140 MB/s

2 - 8G - 8073448


System tested at 72% used capacity with 9 iSCSI LUNs (0% fragmentation), 4 LUNs in light to moderate use by MS SQL databases.

Judging by the file timestamps, it appears Bonne++ took about 6 minutes to run:
Code: Select all
-rwxrwxrwx 1 nobody nogroup    2 2010-05-12 11:11 coef.txt
-rw-r--r-- 1 nobody nogroup  105 2010-05-12 11:17 DD_result.txt
drwxr-xr-x 4 nobody nogroup 4096 2010-05-12 11:15 previous
-rw-r--r-- 1 nobody nogroup 3412 2010-05-12 11:15 Result.html
-rw-r--r-- 1 nobody nogroup  801 2010-05-12 11:15 Result.txt
drwxrwxrwx 2 nobody nogroup 4096 2010-05-12 11:15 tmp
-rw-r--r-- 1 nobody nogroup   17 2010-05-12 11:11 variables.txt


ReadyNAS Pro Business
4 GB RAM
6x 300 GB WD Velociraptors
RAID Level X-RAID2, 6 disks
Status: Redundant

1001 GB (72%) of 1371 GB used
No space allocated for snapshots

RAID Disks:
Ch 1 : WDC WD3000HLFS-01G6U0 [279 GB] 274 GB allocated
Ch 2 : WDC WD3000HLFS-01G6U1 [279 GB] 274 GB allocated
Ch 3 : WDC WD3000HLFS-01G6U0 [279 GB] 274 GB allocated
Ch 4 : WDC WD3000HLFS-01G6U0 [279 GB] 274 GB allocated
Ch 5 : WDC WD3000HLFS-01G6U0 [279 GB] 274 GB allocated
Ch 6 : WDC WD3000HLFS-01G6U0 [279 GB] 274 GB allocated
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2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC info

Postby MrCyberdude » Thu May 13, 2010 7:54 am

@emonkia ... Very Nice speed.

Mine is not .... 20,656 vs 212,202 ..... That is 1/10 or should I say 10% the speed of yours ... Im saying it looks to be down to the HDD's Only so its the WD..EARS vs WD VelociRaptor...... and 4KB cluster straddling 2 physical sectors.... i.e. 4KB Alignment problem.

Just To Make It Easier On The Eyes To Compare.
Code: Select all
            Size  K/sec %CP    K/sec  %CP    K/sec  %CP  K/sec  %CP    K/sec  %CP   /sec   %CP
WD20EARS      2G   760   88    20656    4    17189    4    734   55   147995   26   218.3   3
WD3000HLFS    8G   302   99   212202   71   107321   26   1302   99   277330   34   942.3   24

Latency   **Note Milli Seconds vs Micro Seconds**
WD20EARS       9958us    2174ms    1951ms    1518**ms**     101**ms**    100ms
WD3000HLFS    29253us     152ms     145ms   18990**us**   41966**us**    394ms

files:max:min       /sec  %CP     /sec  %CP    /sec  %CP    /sec  %CP     /sec  %CP   /sec  %CP
WD20EARS     256     239   99   302797   99   21390   19     259   99   314931   99    325   49
WD3000HLFS   256   25163   74   253426   99   19293   48   28168   81   325141   99   8949   23

Latency   **Note Milli Seconds vs Micro Seconds**
WD20EARS       406ms   664us   432**us**   444ms   60us   4932ms
WD3000HLFS     177ms   887us   369**ms**   120ms   75us   1072ms

Please Read this article about the new "Advanced Format" 4KB Block sector / cluster Overlap / mis-aligned Data.
In a nutshell, it’s replacing the traditional 512 byte hard drive sector with a 4 kilobyte (4,096B) hard drive sector for a number of practical and technological reasons.
http://www.anandtech.com/show/2888 ... Read from the start to finish and you will understand how this will eventually effect everyone and all brands as HDD sizes grow past 2TB.
There are benefits such as better error correction not to mention the size increase..
c3po wrote:(Shortened quote) Hi MrCyberdude,

To address the complaints on HDD:
(1) The regulatory and safety tests are lengthy, because of this, WDC tends to change hardware and firmware without changing product model name and model number(Very bad practice) - We have been caught by this many times.
The very latest one is 4KB physical sector. Somehow, ReadyNAS is not 4KB aligned(We take part of blame on this because we should have used 4KB boundary).
Because of this, each write will split into two writes (WDC has to read/modify/write with correct ECC to half updated physical sector),
write performance hit is over 50% because of this. New release will of course address this problem
(2) Disk test. We have integrated disk test into boot menu for a while now. To access boot menu, please follow the user manual (I am not sure if this is actually documented for each product, but I am sure you can get answer for each ReadyNAS on forum)
(3) Rather than this 4K performance issue, and above disk test, I don't see any other case that we can blame HDD for performance issue

Best regards, c3po
This will most likely be addressed under Yoh-Dah's areas of Firmware updates not by c3po's.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby emonkia » Thu May 13, 2010 10:15 am

I would not expect the WD 2.0 TB drives to be able to keep up with the Velociraptors, it is the cargo van vs. a sports car.

We chose the Velociraptors specifically for their low latency, as this NAS runs SQL databases via iSCSI. Surprisingly, the Pro with 6 of these drives via iSCSI is (much) faster than a directly attached Dell PowerVault with 12x 73 GB 10k SCSI drives running off 2 channels on a Perc III RAID controller.

Your system was also slower than the other reports, as it seems the test should take about 6 minutes to run. Since you had 2 GB tests, it should have even been faster (mine was 8 GB test). The 4k sector boundary offset issue would definitely hurt here, but I would only expect about 4 times as long. This problem reminds me of the shoe shining problem slower systems have with fast tape drives.

The weird thing is a contiguous multi-sector write should not incur the penalty nearly as bad, as they should queue up in the drive then get commited. There might be something else at work here causing your troubles. And from what you have mentioned, I would never run a 4k sector drive in a ext4 array unless every drive was a 4k sector drive. The changes in ext4 work well with 4k sectors, but a mix would likely cause nothing but bad performance, or fault intolerance at worst. :shock:

My suggestion would be to replace the two WD drives in your setup (you had 2 of them, and 4 Seagates?). I've had many problems with the Seagate 1.5 TB drives in the past, but hopefully a year+ later they have worked those out.
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Fri May 14, 2010 6:17 am

Here is the bad news...

20.5 MB/s to NAS
67.7 MB/s from NAS

Installed are 6 identical Hard Drives Model: WDC WD20EARS-00S8B1 Firmware: 80.00A80 Serial: WD-WCAVY258?x?x?
I also have 2 spares still in foil.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby MrCyberdude » Fri May 14, 2010 6:37 am

Breaking News. http://www.readynas.com/?p=3690


Technical Bulletin: ReadyNAS and WD hard disks with 4K sectors

Recently, Western Digital has started releasing hard disks utilizing 4K sectors, and other disk manufacturers will be doing the same in the near future. The ReadyNAS will work with these 4K sector drives, however, we will not put these drives in the compatibility list due to the fact that partitions on the ReadyNAS are not 4K sector aligned, and thus write performance can suffer because of that.
Rest assure that we are in the process of adding proper support for the 4K sector drives and will release firmware updates for all of our ReadyNAS systems to address this.
However, because changes like this requires proper level of testing, we will take as long as necessary to ensure your data is not compromised.

In the meantime, please note that WD has released the 4K sector drives under the same base models as the 512-byte sector drives. For instance, the WD20EADS drive are available in both 512-byte and 4K sectors. You will need to look carefully at the notes in the compatibility list where we specifically state the full model number, include the suffix after the dash “-”. In the case of WD20EADS, we will put in the notes that the model that passed qual is WD20EADS-00R6B0. This is the 512-byte model. Whenever a suffix note is mentioned, refrain from using drives with a different suffix. We advise that if you cannot verify the suffix from the disk retailer, either avoid purchasing the drive(s) from there or ensure that the retailer has a quick return or exchange policy.
Netgear ReadyNasPro Pioneer 6Bay Raid6, Infrant X6/600RevisionA With Horizontal HDD Mod, Netgear NVPV2 4 Bay Raid6 aka NV+v2 aka RND4000
I do NOT recommend ReadyNasPro Firmware 4.2.8 ,4.2.9 or 4.2.11 due to Hanging and Disconnection issues. 4.2.12-T9-T17 Works Much better.
I Do support WD20eaRs HDD but read up on "2TB WD20EARS HCL Advanced Format 4k Sectors TLER LCC WDidle3" issues
first. 4KB sector issue looks to be fixed with 4.2.12-T9-T17
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Re: 2TB WD20EARS HCL, Advanced Format 4k Sectors, TLER, LCC

Postby emonkia » Fri May 14, 2010 8:33 am

The good news, if you could call it that, about this problem is that the fix for a 4k sector size is likely very close or identical (coding) to get 16k or 32k sector sizes, which a lot of SSD drives use. Once the file system is configured and aligned for the SSD's true sector block size, those drives will start to really scream.

This could easily lead to the next generation of ReadyNAS based on 2.5" SATA/SAS drives running off of SAS controller(s).

So, it might be your pain will lead to great things. Keep up the good fight.

Being upside down, you might not have heard what Nancy Reagan said in the 80's:
This is your brain: :o
This is your brain on mis-aligned sectors: :shock:
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