IDE is not a good technology to use for RAID. You can only talk to one
drive per channel at a time. So your read/write cycles would talk to at
most two drives at a time, and never to both on one channel at once.
IDE has (AFAIK) more system overhead - it's a dumber interface.
Using Linux software raid will work, but I would expect it to be a dog.
You're better off going with a cheap scsi card and a bunch of smaller
drives. If performance isn't too much of a deal, go with narrow (50 pin)
drives - 10meg/sec. For a faster system, go with wide (68 pin)
20-40meg/sec.
For better reliability, get a hardware solution. A DPT SmartRaid IV or V,
AMI MegaRaid or Mylex DAC series all work well. I use DPT at home, and the
AMI MegaRaid and Mylex DAC960PL at another client, all with great success.
Hot-swap rules !
Dean.
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From: CBR...@seitz.com@INTERNET
To: debian-u...@lists.debian.org@INTERNET
To: owner-linux-r...@vger.rutgers.edu@INTERNET
cc: DEM...@seitz.com@INTERNET
cc: R...@seitz.com@INTERNET
Subject: Raid 5 advice...
I want to put together a cheap server with lots of space, good
reliability, performance is not critical.
I was thinking of a Debian Linux system with say 4 UDMA 16-20g IDE
drives.
What is the best kernel and raid tools versions to be using for this,
from a data security and reliability standpoint?
TIA,
Chris
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