I've been hoping to find the WD drives for $80 ($10 discount). I'm a bit leery of going with Hitachi, mainly because I don't know much about their reliability and those drives also only have 16MB cache.
Honestly, the 1TB green drives seem like the ideal purchase because they run quieter, cooler, etc. In a server with 22 of these drives that will really help. I may not need to upgrade my UPS. I read some specs and they average 1 watt less draw compared to the WD Black drives during seek. At idle, they save several watts.
My plan (subject to change) is a 20-hot swap bay case with all twenty devoted to a single array in RAID6+. My current card allows this and I hope this new Areca 24-port does as well. It basically means 3 parity drives. And one will be a hot spare. So 16TB + 3TB parity + 1TB hot spare.
My current setup is 16 500GB drives in RAID6 (no hot spare) = 7TB. This is literally down to 10GB free. I look at it that I could double all the data on the system, 14TB, and still have nice breathing room of 2TB.
The case also has a slim optical port which I'll put a slim DVD-RW drive in. Lastly, it can support a drive in the center and I expect that where the slim floppy bay is, I can put another drive. So this will allow me to have RAID1 for the OS drive. I will either use onhand 500GB drives or just get a few more 1TB green drives.
What size power supply will I need for this system?
Low-end Core 2 or Xeon (haven't decided yet) [65 watt]
4 - 8GB memory
Slim optical drive
Areca 24-port hardware RAID card
22 7200 RPM drives (green edition)
I tried to add it up and thought perhaps 400 watt. Can anyone recommend a redundant PSU on Newegg? All the cheaper ones seem to have poor reviews saying it's better to spend the money on a better single-unit.
Addition: Do hot spare drives literally stay spun up and ready to go? If they do, aren't they wearing? Shouldn't they be cold-spares?
I got the Newegg email too with the Hitachi drives. I can get four more (24 total) for the same price as 20 WD. The cache is no big deal because I'm not going for speed in any way. Capacity! Besides, I'll get plenty of speed. But I may jump on that deal. Thankfully it lasts about a week. Then I was reading that the Green drives are not good for RAID...oh great! I am incredibly concerned with a reliable setup--like the one I've got now. I'm keeping my current server for a very long time and may just use it as a large backup device--not that it will hold everything this new server will have