topic Re: LVM || VxVM || RAID in Operating System - HP-UX

LVM || VxVM || RAID

boomerang — Fri, 17 Dec 2010 08:31:33 GMT

Which all RAID is support in LVM and which are not ?

Which all RAID is support in VxVM and which are not ?

Re: LVM || VxVM || RAID

Torsten. — Fri, 17 Dec 2010 08:35:33 GMT

LVM can do mirroring, striping and (in 11.31) striped mirrors, usually called RAID0, RAID1 and RAID10 or RAID0+1.

I assume VXVM does the same.

At least in previous releases VxVM was able to do RAID5, but this has worst performance.

Re: LVM || VxVM || RAID

Ismail Azad — Fri, 17 Dec 2010 10:24:49 GMT

Hi,

Adding to the olympian's comments, striping, mirroring and "striped logical volumes that can be mirrored" and not the other way around can be done using LVM. And VxVM does support RAID5 and also supports a concept of "dynamic relayout support" which means that the format can be changed from RAID5 to mirrored which is a feature not available in LVM v1. Remember these RAID levels are again I will say at the LV level and at the end of the day based on "extents".

Regards
Ismail Azad

Re: LVM || VxVM || RAID

Zygmunt Krawczyk — Fri, 17 Dec 2010 13:06:43 GMT

LVM in 11.23 can also do striped/mirror volumes after installing patch PHCO_37939 11.23 LVM Striped/Mirror + 16TB LV Enablement and patch PHKL_40918 11.23 LVM Cumulative Patch

Note, that LVM mirroring and striped/mirror requires additional license MirrorDisk/UX.
VxVM requires VxVM Full license for RAID-ed volumes.

Re: LVM || VxVM || RAID

Emil Velez — Sat, 18 Dec 2010 01:17:27 GMT

lvm supports mirroring (raid 1)

vxvm with additional licensses supports RAID 5 and RAID 1