topic Re: Stripping in Operating System - HP-UX

Stripping

ROSS HANSON — Thu, 24 Jul 2003 17:10:44 GMT

I have 18 disk that I have placed in a volume group. I am now trying to do a lvcreate but I want to stripe them in a 0/1 pattern. I have viewed the lvcreate man page but I did not see the flag for 0/1. What am I missing if anything?

Re: Stripping

Pete Randall — Thu, 24 Jul 2003 17:12:49 GMT

See JRF's response in this thread:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0xaa7c6697de268843871b13cc474adbfe,00.html

It's still true.

Pete

Re: Stripping

Tim D Fulford — Thu, 24 Jul 2003 19:52:25 GMT

No my answer is best!!!! wink wink...

Tim

Re: Stripping

Pete Randall — Thu, 24 Jul 2003 20:01:38 GMT

Tim,

I agree - *IF* Ross has MirrorDisk/UX (if I understand you correctly, that is).

;^)

Pete

Re: Stripping

Michael Steele_2 — Thu, 24 Jul 2003 23:43:42 GMT

(* I think some of these guys are having some fun with you *)

IF you've got a VA7400 then don't use LVM stripping and expect better performance, expect worse performance. The disk array implements its own 'Autoraid' configuration and maps your data into raid 0/1 for you. And by adding LVM raid 0/1 on top of VA7400 raid 0/1 would aide you in what way?

Best performance in the VA7400 is achieved with one or two large luns and the 'Autoraid' selection.

See page 13 and 17 of 158 below.

http://h20015.www2.hp.com/content/common/manuals/lpg28817/lpg28817.pdf;jsessionid=GE2AGF4XMO5KPQEXGR5UOSQ

Search the ITRC for va7400 performance. Here's one link of many:

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x7239eea29889d611abdb0090277a778c,00.html