D&C GLug - Home Page

[ Date Index ] [ Thread Index ] [ <= Previous by date / thread ] [ Next by date / thread => ]

Re: [LUG] OT:To Raid or Not Raid (That is the Question)

 

Gordon Henderson wrote:

> Going to RAID-0 will in-theory double your disk bandwidth. It'll also 
> double the chances of failure, now that you need to rely on 2 drives for 
> the data. RAID-1 will not give yo any speed-up whatsoever. (Actually the 
> Linux R1 driver may give you a speed-up, but not by much)

I've not looked at how MD or LVM does it, but in theory RAID1 can give
you a good increase in speed because reads from the two (usually)
mirrored drives can be interlaced.

James

-- 
The Mailing List for the Devon & Cornwall LUG
http://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html