Tag Archives: ioinit

Migrating a ServiceGuard cluster to another storage

03/11/2009 – 14:44

Here are the steps for offline migrating a Serviceguard cluster to another SAN: create a LUN list:no. of source box no. of source LUN size of source LUN no. of target box no. of target LUN size of target LUN

By Viktor Balogh | Posted in HP-UX Serviceguard, HP-UX system administration, Storage | Also tagged , , , , , , , , | Comments (0)

Calculating the HW path for a LUN

08/05/2009 – 12:02

Ensure that the LUN number is represented in decimal; an HP XP disk array uses hexadecimal LUN numbers while an HP VA disk array uses decimal LUN numbers. The Virtual SCSI Bus starts at address 0. If LUN number is < 128 (dec) then go to step 7 below Increment Virtual SCSI Bus by 1 [...]

By Viktor Balogh | Posted in Hardware, Servers, Storage | Also tagged , , | Comments (0)

Loadbalancing VGs manually

02/05/2009 – 17:05

Yes, I know that HP-UX 11i v3 is capable of native multipathing by default, but not every customer can afford the expenses and risks to migrating to a newer OS. So here are a few sample scripts just to show how you can automatize the hard work of doing repeatly vgreduce/vgextend to organize the paths [...]

By Viktor Balogh | Posted in LVM and VxVM | Also tagged , , , , | Comments (2)

Reorganizing IO tree – general steps

26/04/2009 – 17:33

Make a system recovery tape Collect IO trees from all nodes concerned Decide on the format of the standardized IO tree Document the current device file – HW path mapping Establish which system and user applications use current device files Create an ASCII file representing the new IO tree Shut down the system(s) to single [...]

By Viktor Balogh | Posted in HP-UX system administration | Also tagged , | Comments (0)