Hard drive performance

Have a sata2 raid 1 configuration for a sbs server 2003 running ms exchange, an sql 2005 express all for about ten users. In terms of performance monitoring, what are benchmark figures that I need to be concerned of for:

Disk write queue length
Disk read queue length
Pages / sec

I am using hound dog (not sure if anyone knows what it is) but it keeps sending me alerts.

Thanks
bineleAsked:
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Duncan MeyersCommented:
Monitor write queue length. If it is consistently high (>8), and response time is consistently > 20msec, then you most likely need to change to a RAID 1/0 or RAID 5 set with more physical discs.

Also keep an eye on Physical Disk Writes/sec and Physical Disk Reads/sec. You'll probably get a maximum of 120 I/O per second - consistently much more than that, and you'll see response time go up and the queue lengths get longer.
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bineleAuthor Commented:
thanks
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Duncan MeyersCommented:
Thanks! Glad I could help.
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