RAID- any benefit to having multiple RAID arrays?

[Fred Jodry]

David, I`d imagine that concentrating on the RAID, work, drives instead of the startup volume (boot) drive, is what to do. One way is to use a very good grade regular set like Hitachis. Better results are to use 2-1/2 inch drives, as the swinging of the arms is faster and less electricity. By the time you see the results after the math, this is pretty universal. The lesser electric bill gets remarkable. Considering that the 2- 1/2 inch drives at very economical sizes are maybe 320 GB not 500 GB for the 3-1/2 inch drives, everything points to having more drives in the RAID array, which isn`t necessarily poorer at all. Just when I least expected it, I ran across a sale of 120 GB SATA 300 (read, write, both, around 275 MB per second) SSD drives for $199 apiece. Oh, well, I`ll just have to write in the sand for now and hope the sale repeats someday.
– – Note, SSDs in a RAID 0 should purr like a kitten. – – Fred Jodry

(David Gagne Re: RAID- any benefit to having multiple RAID arrays?
by David Gagne on Jan 15, 2011 at 11:41:38 pm
1. If speed on your startup volume is an issue, buy a single SSD for it.
2. What kind of raid controller does your system have? If you have a single drive as your OS, can you still have a 4-drive raid 5? I wouldn’t do RAID 0 for production unless you have realtime backups or your work is amateur only with no money involved.)