A 3ware card will re-order your writes to put them more in disk order, which will probably improve performance a bit, but just going from a software RAID 1 to a hardware RAID 1, I would not imagine that you will see much of a performance boost. Really to get better performance you will need to add more drives, or faster drives. If you are currently running 7200 RPM consumer drives, going to a 10000RPM WD Raptor drive will probably increase performance by about 30%, again not all that much. Alex On 1/18/06, Benjamin Arai <barai@xxxxxxxxxx> wrote: > > Hi, > > I am currently doing large weekly updates with fsync=off. My updates > involves SELECT, UPDATE, DELETE and etc. Setting fsync=off works for me > since I take a complete backup before the weekly update and run a "sync" and > "CHECKPOINT" after each weekly update has completed to ensure the data is > all written to disk. > > Obviously, I have done this to improve write performance for the update each > week. My question is if I install a 3ware or similar card to replace my > current software RAID 1 configuration, am I going to see a very large > improvement? If so, what would be a ball park figure? > > > Benjamin Arai > barai@xxxxxxxxxx > http://www.benjaminarai.com >
