Segate 750s - ST3750640AS vs ST3750640NS

[jeffcraighead]

I've got 2 AS drives (added the 2nd one just last week) and I haven't had any problems. The NS drives are $100 more and I was not aware of the difference at the time. Would there be any issue with using 2 NS drives with the 2 existing AS drives, although if I don't have any issue with the AS's I may just stick with those since I never move my NAS?

[Skyline]

The greater rotational vibration handling of the NS (ES Series) drives is not meant for moving a running drive physically. The drives themselves cause vibration as the heads move. The NS drives are meant to handle this vibration and added heat when used in a RAID setup with multiple drives installed closely together.

Personally speaking, I would only get the NS drives, but I think you should be fine mixing up 2 AS with 2 NS. I wouldn't worry about it since it's a redundant configuration and you can always replace a failed drive with no danger to data.

[fdm99]

I recently ordered an NV+ and was also trying to determined the difference between ST3750640AS & ST3750640NS. After talking to Seagate support they recommended the NS for RAID.

[smartwombat]

I have 8 NS drives in two NV+ and within a year one is failing.

The NS Enterprise series drives were supplied in the NAS preconfigured by an Infrant dealer in the UK.
I couldn't buy the drives myself cheaper than their price on top of a barebones system.


I want UK support and exchange, to minimise service delay.
So for the 1TB drives that will be a requirement.
That and a spare drive on the shelf ...

___________________________________________________________

SMART Information for Disk 1

Model: ST3750640NS
Serial: 5QD03840
Firmware: 3.AEG

SMART Attribute

Spin Up Time 0
Start Stop Count 36
Reallocated Sector Count 1
Power On Hours 5654
Spin Retry Count 0
Power Cycle Count 39
Temperature Celsius 37
Current Pending Sector 4294967295
Offline Uncorrectable 4294967295
UDMA CRC Error Count 0
Multi Zone Error Rate 0
TA Increase Count 0

ATA Error Count 23835

Extended Attribute

Hot-add events 0
Hot-remove events 0
Lp stat events 1556
Power glitches 0
Hard disk resets 0
Retries 0
Repaired sectors 0

[Jedi Knight]

wow.. that's a very high ATA error count..

[smartwombat]

That's in two days, at around 10000 a day.
Plus the one reallocated sector.

I think it maybe a warranty return.
But the Seagte error tester may say it's not faulty ...