Unplug/Eject an Unused Disk off of a DS2100 on a server Running HPUX11i

[Alzhy]

I've an unused disk (not in any LVM/VXVM VG) off of a ds2100 array enclosure (4 slots) connected as a boot enclosure for an rp8400. I want to eject this disk out of this enclosure and replace it with a diffrent one (the original is a D copy of the running OS will go to a new server..).

Are there any HPUX commands (like cfgadmin on Solaris)that I must use to quiesce the slot for safe ejection? Or on HP environments it does not matter and I could just pop off this disk.. since it is unused?

[Shahul]

Hi,

From HPUX point of view, if the HDD is not part of any VGs and no raw volumes or partitions are used by system, you can safely remove HDD without using any command. But from array point of view you may need to consider any array administration commands or utilities. If there is no utilities as such then you are through.

Good luck
Shahul

[Alzhy]

Sahul,
Thans.. the ds2100 is just a JBOD enclosure.. no intelligence on their, just slots for pluggable disks...

[A. Clay Stephenson]

These are referred to hot-plug devices. If you know that the module is not in use by any host then simply yank it out. This will trigger a SCSI bus reset but that is considered a normal event and the i/o subsystem should recover from it gracefully.

You should make certain that this module is not used as a raw devicew or swap volume. That is sometimes overlooked when you simply look at filesystems.

[Alzhy]

Hey Thanks A. Clay!

Am pretty sure the disk I am targetting for ejection is not in use in LVM/VXVM/direct... either raw or normal..

These are the "disk systems" as HP calls them that we use (similar to Sun's D240).. 1U racks that can contain 4 pluggable disks .. perfect for boot subsystems..(we have two each - each with 3 disks for redundancy on our servers)

http://www.hp.com/products1/storage/products/disk_arrays/disksystems/ds2100/index.html