FAULTY DISK replacement HP rx4640


 
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Operating Systems HP-UX FAULTY DISK replacement HP rx4640
# 15  
Old 05-24-2012
According to "when good disks go bad" for an Iantium boot disk, the partitioning comes first.

Sorry to mislead you. Myself and vbe don't have 11.23 on Iantium and the new procedure is different from every earlier version.
# 16  
Old 06-05-2012
Hello,

We tried to do the disk replacement today but with no success. We got stacked on the server not recognizing the new disk as CLAIMED. Below the procedure followed:

Step 2)
Code:
# pvchange -a N /dev/disk/disk13_p2

Warning: Detaching a physical volume reduces the availability of data within the logical volumes residing on that disk.
Prior to detaching a physical volume or the last available path to it, verify that there are alternate copies of the data available on other disks in the volume group.
If necessary, use pvchange(1M) to reverse this operation.
Physical volume "/dev/disk/disk13_p2" has been successfully changed.

Step 3)
Replace the hot-swappable disk and wait 2 minutes

Step 4)
Code:
# scsimgr replace_wwid -D /dev/rdisk/disk13

scsimgr:WARNING: Performing replace_wwid on the resource may have some impact on system operation.
Do you really want to replace? (y/[n])? y
scsimgr: Successfully validated binding of LUN paths with new LUN.

Step 5)
Code:
# ioscan -m lun

Class I Lun H/W Path Driver S/W State H/W Type Health Description
========================================================================
disk 9 64000/0xfa00/0x0 esdisk CLAIMED DEVICE online HP 146 GST3146855LC
0/1/1/0.0x1.0x0
/dev/disk/disk9 /dev/disk/disk9_p2 /dev/rdisk/disk9 /dev/rdisk/disk9_p2
/dev/disk/disk9_p1 /dev/disk/disk9_p3 /dev/rdisk/disk9_p1 /dev/rdisk/disk9_p3

disk 13 64000/0xfa00/0x5 esdisk NO_HW DEVICE disabled HP 146 GST3146855LC
0/1/1/1.0x0.0x0
/dev/disk/disk13 /dev/disk/disk13_p2 /dev/rdisk/disk13 /dev/rdisk/disk13_p2
/dev/disk/disk13_p1 /dev/disk/disk13_p3 /dev/rdisk/disk13_p1 /dev/rdisk/disk13_p3

We tried two new disks but the result was always NO_HW. Few things that we noticed were that the STATUS LED on the new disks was very week comparing to the healthy in service one. The ACTIVITY LED went on only for a couple of sec and then was off all the time.
At the end we tried putting back the initial faulty disk. In this case both LEDS were very strong and on all the time but still NO_HW.

Any suggestions will be very helpful.

Thanks again for your support,
gjk
# 17  
Old 06-05-2012
You new disks are not in great shape...
Can you insert them elsewhere and see if you can initialize them (e.g. by creating a new volume group and lvm on them...) just to check they can be used or are really almost dead...
Or try them on another server and see what happens...
Do you have separate controllers in your box? ( I usually ordered boxes with 2 independant SCSI controllers for the internal mirrorirng when possible, some boxes like RP 54000 series and above it was standard...)
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