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Pros: Array actually took 30+ hours for initial Build/Verify (RAID6 - approx. 16TB, per Windows) . NOT complaining. Running very smoothly indeed. FYI my transfer rate during a Symantec System Recovery backup is probably a bit under 40MB/sec., which is very good considering the overhead the program uses to gather and compress the data - in my case to "blobs" of 4.7GByte - this is the way I've set it - and it's a sustained transfer of several hundred GB at once over a gigabit network link. No complaints at all about this setup. These drives appear to have been a good deal indeed.
And power consumption, noise and heat seem to be quite low. It says in various places online that the power draw per drive is 6.9W at idle. I have no clue why the active power spec isn't given, but my server has a relatively small power supply, and I see no evidence of strain with six of these drives, two others (a RAID1 80GB boot pair) and the other system hardware.
Cons: None that I can see.
Other Thoughts: I'm noting here that HGST (Hitachi Global Storage Technologies) is now part of WD, but these drives seem to have a significantly lower DOA rate than the large-capacity WD-branded drives, if you believe what you read online (I do). I am six-for-six drives at this point. I purchased a 7th drive as a spare. I suspect I'll be testing that shortly, to be sure, but I fully expect to be just fine.READ FULL REVIEW
Pros: Set 6 of these up in a RAID 6 configuration on an (8-port) Adaptec 3805 controller that has 256MB of cache. Controller, even though a few years old (with most recent firmware that's still kinda old), instantly recognized the drives and allowed me to create a "14.5TB" array using "quick init". Set up GPT partition and Windows tells me there's just shy of 16TB, which is correct, of course.
It's still on the initial "verify-fix" - this is recommended if you do a quick init - but there don't seem to be any significant errors - looks like this will take around 20 hours total - again, pretty much as expected.
I had done a test backup to the array from another machine over Gbit ethernet using Symantec System Recovery (Win 2003 x86 on both ends). Transferred over a gigabyte a minute. Very happy with these results - and the array was still in "quick init" mode. It "tells me" that performance will be better after a verify-fix but if it stays where it is I'll be so pleased.
Cons: none so far
Other Thoughts: 16 TB is a LOT of space! I am old enough to remember when 5MByte hard drives were over $ 2,000.00.READ FULL REVIEW
Pros: Works when it's working.
Cons: Flash-updated the controller and now it's not recognized by any computer it's installed in. So I opened a ticket on their support site.
They told me to reflash, but when trying this I'm getting, not surprisingly, a message that the controller is not found.
Tech Support is via a slowwww portal. You submit a ticket and wait for a response. I had to wait a day for a response, and they quickly followed up to ask if things were working. But after I told them their suggestions did not work, there has been NO response for 2 days. Not good.
I'm stuck at the moment with a dead controller, and will certainly get my next one from companies that have better (and live via phone!) support.