topic Re: Largest Disk or LUN in Operating System - HP-UX

Largest Disk or LUN

George Neill — Tue, 28 Nov 2006 11:54:41 GMT

With HP-UX 11.23 on an Itanium2 system, what is the largest disk or LUN that the system can use? I have a 5.9TB LUN but my systems insists on saying it is 2TB in size.

Thanks,
George

Re: Largest Disk or LUN

James R. Ferguson — Tue, 28 Nov 2006 12:05:19 GMT

Hi George:

You should be able to exceed 2TB if you are using VxVM (not LVM) and you have Online JFS. See Table-2 of:

http://www.docs.hp.com/en/5971-2383/5971-2383.pdf

Regards!

...JRF...

Re: Largest Disk or LUN

George Neill — Wed, 29 Nov 2006 10:36:56 GMT

I think I can create a file system larger than 2TB but so far the only way to use my disk space is to break it down into multipule 2TB LUNs. Then use VxVM to join them back together to get the over 2TB file system.

Thanks, George

Re: Largest Disk or LUN

Jeff_Traigle — Wed, 29 Nov 2006 10:46:36 GMT

Google search for HP-UX LUN size found the following thread where someone mentions the 2TB is the limit for a LUN based on FC standards.

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=999528