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ekotan

What are the differences between HGST Deskstar and Deskstar NAS 4TB mo

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Are there any differences between HGST's Deskstar (HDS724040ALE640) and Deskstar NAS (HDN724040ALE640) 4TB models? According to Hitachi's data sheets, they both feature 7200 RPM spin speed, 64 MB cache and a SATA-III interface. Pricing is also similar. The NAS model's data sheet also mentions rotational vibration sensor technology and 1 million hours of MTBF, so are they designed with a little more fault tolerance in mind?

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They are designed to handle additional vibration and other firmware optimizations for multi-drive storage sub-systems-- small RAID setups and whatnot.

For desktop use you probably want the regular Deskstar, as the Deskstar NAS line almost certainly has a shorter error correction timeout optimized for RAID use, rather than a longer error correction period permitted for desktop drives.

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Thanks, I've got five of the Deskstar NAS models in an internal RAID-5 array on an Areca 1882 controller and five of the regular Deskstars in an external Drobo 5D RAID which is used for overnight incremental backups (so not in constant use). So far, all is working well; and I'll monitor the situation over time.

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FYI, we just got a box of NAS drives from HGST, should start testing soon. Most of it will be done within NAS systems, but we'll run some single drive numbers for you too for comparison. Like has been said though, I'd stick with the Deskstars for your use.

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