Re: Vinum vs. hardware RAID (was: RAID5)
- Original Message - From: Gerd Knops [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: FreeBSD-Stable [EMAIL PROTECTED] Sent: Wednesday, September 05, 2001 8:00 PM Subject: Re: Vinum vs. hardware RAID (was: RAID5) Jim C. Nasby wrote: On the same vein, is booting off of vinum in the works yet? I know it's been looked into... It seems that would be one of the biggest advantages that hardware raid has over vinum. For some definition of advantage that is. Advantage: Automatic handling of drive failure. I view the / and /usr partitions as more or less static, and only put the partition containing user data on the RAID. I also put my user data on a seperate file system, but that's not a reason to avoid mirroring /usr. I don't mirror / only because of the booting issues. Too many trivial configuration and status files go on / and /usr, not the least of which is the passwd database. Unless you have / and /usr mounted as R/O, it's amazing how those creep file systems away from being the same as the manual mirror. If something important changes in / or /usr, I mirror those to the backup disk manually. Now if any of those partitions gets corrupted beyond repair (or beyond the abilities of some remote operator), I simply have to swap the drives and am back in business. I think a setup like this is actually safer. You're using manual mirroring to take the place of tape backups. I believe the two are separate functions. Tape backups are cheaper and also automatic if you use AMANDA or whatever you prefer. Once you're backing up any sizable user data on RAID, putting / and /usr on the tape is a minor incremental cost. To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-stable in the body of the message
Re: Vinum vs. hardware RAID (was: RAID5)
+[ Adrian Wontroba ([EMAIL PROTECTED]) dijo sobre Re: Vinum vs. hardware RAID (was: +RAID5): | | Disks are cheap, and capacities constantly expand. Correction: IDE disks are cheap. | Backup devices and media are expensive, wear out, and if they were big | enough when you bought them, soon are not, leaving you with the pain of | swapping media during backups. Tape stackers etc are expensive. | | If you decide that what you really want to protect yourself against is | disk failure, RAID becomes an attractive option. As always, YMMV, but if you also want to protect from other things, then having an external backup (tape, CD, removable hard disk) is something that can save you _lots_ of trouble. Just imagine your machine compromised and having to reinstall everything from scratch ... a mirroring RAID would be of no use. | -- | Adrian Wontroba | +] -- | F e r n a n A g u e r o | B i o i n f o r m a t i c s | | [EMAIL PROTECTED] | genoma.unsam.edu.ar | To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-stable in the body of the message
