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Which current HD to replace a failed Hitachi HDT721010SLA360

post #1 of 3
Thread Starter 
Hey guys!

After 2 1/3 years the first Hitachi HDT7201010SLA360 in my QNAP RAID5 finally gave out. I can't seem to find this very HD anymore, so which current HD can I use to replace it?

I'm a bit concerned that the performance will suffer if the access times/RPM and so on are off from the original HDs... Also if the size would be a few bits smaller, wouldn't the rebuild fail?

Sorry, maybe these are dumb questions, but I don't know very much about NAS and RAID 5 since it worked perfectly up till now...

Last question:
The HD in question is listed as "no HD connected" in the system management software. Could that mean it's a problem with the QNAP rather than the HD? Or could a broken HD cause that message also? The entire rest of the system still runs perfectly, but obviously in degraded mode... (of course it's turned off until I install the replacement disk to avoid more disks failing and loosing my data...)
post #2 of 3
Your best bet is to find the same size hitachi hdd with the closest specs possible, meaning cache and RPMs. HDDs do not need to be identical but it is highly recommended. I cannot guarantee it will rebuild but it definitely should.

Couple questions, is the BIOS reading the drive in your PC? If so, can your format it in windows? If so, try a different port on the QNAP if you can and then try and rebuild if it will see it. No harm in trying the raid has to be rebuilt anyways. It could very well be the controller but you have to troubleshoot it to find out.

Also, when the HDD spins up does it make unusual sounds like clicking or grinding? That would probably mean its the HDD. Just try those things first and let me know.
post #3 of 3
Thread Starter 
OK, I emptied one of the 2 1000GB (Western Digital) drives in my PC and shoved that into the slot, it rebuilt for like 16 hours and is back working...

Now I only have to replace that disk in my PC...
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