http://www.tldp.org/HOWTO/Software-RAID-HOWTO.html
? My other minor replies are in-line below....
On 2/7/06, Matthew Jarvis <[EMAIL PROTECTED]> wrote:
Ben Barrett wrote:
> Matt, a few questions:
> 1. Are you doing hardwaaree or software RAID? If HW, what type?
Don't know yet - that's for my vendor to decide and give me the best
option for our needs. Do you have a recommendation?
Software RAID performance is great for most situations -- however, if you have more than say 5 disks you'll want to research some benchmarks and consider hardware. In most cases, it only uses up less than 5% of a modern CPU's resources and doesn't slow overall throughput -- again, unless you're talking about a very high performance, high-endian system... the price is right for software RAID too!!
> 2. Are you trying to increase performance and reliability [per price, in
> general] or are you aiming at a specific throughput and/or
> failure-recovery potential?
Reliability and recovery.
Good news! I suggest practicing a RAID rebuild pre-deployment when you get the hardware. Try pulling a drive while its on and you'll be better-prepared for one of the worst-case scenarios... a fire drill, if you will.
> 3. ATA, SATA, SCSI? (curious)
Shy about SATA, so one of the others...
Why so shy? SATA is great-a! Seems like the best price/performance ratio for COTS hardware these days. SCSI can be worth it, but there should be good reasons to spend the extra money that way.
> 4. Are you doing a live-system cutover, or is this back-endian or
> happening during scheduled downtime?
after hours downtime....
That helps!! Give yourself some extra time-padding, as always :) Better to be out enjoying yourself afterward, with good feelings, than to be frantic in the 11th hour....
regards,
Ben
_______________________________________________ EUGLUG mailing list [email protected] http://www.euglug.org/mailman/listinfo/euglug
