Dear Experts,

I have been using WD Black HDD for my NAS as they have a five year warranty. But when I have to send them for RMA, the time to travel is a 'killer' for me as it is far off industrial estate in SG. They also do not open on Saturdays which is why I have to take leave just to send the degraded HDD to them. The other option is to pay for courier fee which I am still exploring.

As there are many brands of HDD and there are also many types of HDD for NAS.

Is there any difference between brand wise?

If the brand has no difference, is buying the Enterprise HDD an overkill for my NAS?

Or should I just go back and buy the recommended type of NAS HDD instead?
Anonymous KHIT EngineerAsked:
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How important is your data will answer your question.
The WD black while having a longer warranty period is still a desktop drive.
The enterprise/NAS drives have the additional technology dealing with RAID based responsive criteria.
The RAID controllers have a lest amount of time to receive a response from a DRive attached to them, if the drive does not respond within that timeframe, the RAID controller could see that as a failure and kicking the drive out of the RAID group.
If you want the option to mix brands, you have to make sure they have similar specs including the same size.
Nothing is worse, they getting a 500Gb, 1Tb, 2TB drive from a different vendor only to discover when attaching it to the NAS that it's raw data is smaller than the needed.
I.e, while both rated 1TB, the originals are 1.032TB while the new one you got is 1.031TB

Most vendors, IBM, HP, Dell, have cross vendor selection. But you have to know which matches to which.
Brand doesn't mean anything.  It is the specs that matter.  Seagate makes a 1TB drive that sells to PC OEMs for $29.00, they make another that sells to server OEMs for closer to $800 as example.

Furthermore, the only absolute is that 100% of disk drives fail .. eventually.  Don't even THINK of using a single disk as a NAS drive if you value your data.  Always go RAID1 or some other RAID level that offers redundancy.

Get yourself an "enterprise" class drive.  That is one designed 24x7x365, at 100% duty cycle.  The WD black, red, greens do not qualify.

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Anonymous KHIT EngineerAuthor Commented:
Thanks for the input guys. I will definitely get Enterprise HDD.
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