hi,
got a performance issue on 280R running solaris8 with S1 attached - and it seems to be disk issue :-(
sar constantly shows %wio as 30-60, disks become busy up to 100% sometimes, and i only get speed of 1meg/s when doing file copy from disk to disk.
are there any ways to diagnose this problem?
best regards,
ranger.
* Do you get any messages in /var/adm/messages, about defective hard disks?
* Are you using a volume manager? If so, does it give you any errors about the status of your disks?
* Does "format" return any errors about your disks?
* How is the S1 connected to your 280? Was everything done by the book?
1 meg a second really is dreadfully slow!
run "iostat -nE" and see if any particular disk is showing soft/hard/tran errors (and by running this periodically, you can see if this count is increasing). That way you can identify whether you have a disk problem.
Also, like someone mentioned, check your /var/adm/messages log files and dmesg to see whether there are "scsi" and disk related error messages.
HTH
