On Fri, 24 Jan 2003 00:16, Tinus Nijmeijers wrote: > The system will boot of a scsi HD, I have a backup boot disk available.
Why not use RAID-1 for the boot device? > Disks (couple of 120G IDE or something) will be in 1+0, raid5 or raid6 > (does software raid do raid6?) What is RAID-6? RAID-6 isn't one of the standard RAID levels (which go up to 5). It's sometimes used as a slang term for RAID-1+0 or RAID-0+1 (both of which are known by the slang term RAID-10). Software RAID should do RAID-10, but I've never tested it. > Is there any reason to use hardware-raid over software-raid in this > case? If you have hot-swap hardware then software RAID does everything that hardware RAID does for RAID-0, 1, and 10. Hardware RAID allows easier hot-swapping in some situations (just physically replugging disks with no software adjustments) but hugely more painful hot-swapping in other situations (reboot and run BIOS utilities). Good hardware RAID has a battery backed write-back cache for RAID-5 to give good performance, you probably won't be happy with RAID-5 performance without such a write-back cache. Software RAID is good for price and for when you only want two disks in a RAID-1. If you need great performance from RAID-5 and have the money for it then hardware RAID is the go. Also if you need more than 4 disks it becomes more difficult to manage with software RAID. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/ Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
