XP and slow RAID performance

[stucuk]

Folks,

I have installed a new Highpoint RocketRAID 1640 onto my Windows XP Pro system which has two Seagate Barracuda ATA discs and, using the serial converter, attached them to the RAID card. I have succesfully installed and am mirroring between the two (RAID 1), purely in case one disc fails (as has happened in the past!). Everything works fine but the disc performance has dropped massivly from before. Anybody got any ideas why or how to improve it? Much appreciated.

Reagrds, Stu ...

 

[jurgen36]

Well raid 1 is actually somewhat slower as a non raid system. The controller has to write to both drives at the same time this does slow things down. Raid 0 on the other hand can almost double the read and write speeds, but you have no redundency in case of drive failures. If you want to have the cake and eat it you have to use raid 0+1 or raid 5 or 10. That way you have full redundency and high access rates.
Regards

Jurgen

 

[stucuk]

Jurgen,

Thanks for the response. It was actually no better when I didn't have the mirroring on - just the RAID controller with the one hard disc on and the RAID not doing anything other than providing a 'standard' SATA disc interface. In fact mirroring seems to have made no detectable difference in speed.

Regards, Stu ...