How to Identify/validate failed disks:
1. By using ioscan command:
check the s/w state of the disk. If it is having claimed status means the disk is functioning and responding to controller. If it is having s/w status No_HW or Unclaimed means the disk is suspicious.
#ioscan -fnCdisk |grep -v claimed
2. By using diskinfo command
check the disk information like vendor, product ID, SIZE etc... If the size of disk is 0 means the disk is malfunctioning
#diskinfo /dev/rdsk/c0t1d2
3. Final check by using dd command:
Try to read small portion of disk by using dd command. We will not get any I/O error if the disk is functioning properly.
# dd if=/dev/rdsk/c0t1d2 of=/dev/null bs=1024k count=64
64+0 records in
64+0 records out
1. By using ioscan command:
check the s/w state of the disk. If it is having claimed status means the disk is functioning and responding to controller. If it is having s/w status No_HW or Unclaimed means the disk is suspicious.
#ioscan -fnCdisk |grep -v claimed
2. By using diskinfo command
check the disk information like vendor, product ID, SIZE etc... If the size of disk is 0 means the disk is malfunctioning
#diskinfo /dev/rdsk/c0t1d2
3. Final check by using dd command:
Try to read small portion of disk by using dd command. We will not get any I/O error if the disk is functioning properly.
# dd if=/dev/rdsk/c0t1d2 of=/dev/null bs=1024k count=64
64+0 records in
64+0 records out
Thanks...
Kiran Jadhav
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