EMS notification on SCSI

[Eugeny Brychkov]

Disk c2t6t0 (or whole c2 SCSI bus) is having problems. Steps are:
1. run 'ioscan -fn' and make sure disk is DEVICE/CLAIMED;
2. issue 'diskinfo -v /dev/dsk/c2t6d0' and check if all displayed data is correct;
3. check disk's surface with dd command
dd if=/dev/rdsk/c2t6d0 of=/dev/null bs=4096k
and if it will come with 'I/O error' then be sure there's something wrong with the disk. During this dd disk should flash its led, but if you'll see disk stopped flashing but glows its led solid it is the sign that disk is trying to recover.
In most cases the cause is a bad/dying disk. The exception can be if there're multiple disks on the bus but you receive these notifications only for one.
So please make sure that you have good recent backup/ignite image
Eugeny

[Andrew Merritt_2]

Hi Munawwar,
The way to see what the actual problem reported is is to run the suggested command, (/opt/resmon/bin/resdata -R 176947206 -r /storage/events/disks/default/0_0_2_1.6.0 -n 176947202 -a)

or to look in the /var/opt/resmon/log/event.log file where the events are logged. The events would also be sent to root by email with the default setup (run /etc/opt/resmon/lbin/moncheck to see).

This should give more specific details of what the problem is, but I agree that it is most likely a defective disk that is causing the problem.