SUMMARY: devices to monitor via iostat

the best answer was from Kevin Buterbaugh, read
on.....

--JD


>      Pay more attention to the sd devices than the
> md devices, since they 
> (the former) are the actual physical disks
> comprising the metadevices.
> 
>      The way you map between the cxtxdxsx name of a
> disk and the sd name 
> is via the /etc/path_to_inst file.  HTH...

original post:
> Subject:        devices to monitor via iostat
> 
> a question regarding iostat on what device name i
> should pay attention to.  should i pay special
> attentiont to the sd0 and sd1 names or monitor the
> md15, md10, md11 names?  this box has OS mirroring
> w/
> DiskSuite.  meaning, sd0 is the block device of the
> first SCSI drive, and sd1 is the block device of the
> second SCSI drive, and the md15 is the pseudo device
> name for the mirror device.  which stats should i
> pay
> attention to?
> 
> a related question - i have a SAN device with a
> block
> device of c2t61d0.  how is the "sd" name presented
> in
> iostat derived?  i've looked at the actual device
> name
> in /devices/pci@1f,4000/.... but this doesn't seem
> to
> match iostat's output.
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