SAN_AK
3 Argentium

Host based LVM migrations on HP, Solaris and RoboCopy for windows to migrate off from DMX/CX to VMAX

Hello All,

If could someone outline the steps for the host based migrations for the hosts Solaris, HP hosts using LVM. The plan is to migrate the existing storage from CX/DMX to the VMAX.

Regards,

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5 Replies
dynamox
6 Thallium

Re: Host based LVM migrations on HP, Solaris to migrate off from DMX/CX to VMAX

for HP servers using native LVM the steps are pretty simple, your HPUX admins should know this.

1) pvcreate new disks from VMAX

2) vgextend new disks into the volume group

3) begin mirroring each logical volume (lvextend -m 1 lvname)

4) after mirroring has finished, remove mirror from the old disk (lvreduce -m 0 lvname /dev/dsk/olddiskname)

5) remove old disk from volume group (vgreduce vgname /dev/dsk/olddiskname)

SAN_AK
3 Argentium

Re: Host based LVM migrations on HP, Solaris to migrate off from DMX/CX to VMAX

Thanks for the response Dynamox, is it same for Solaris too, I appreciate,  if you or someone could shed some light RoboCopy for windows.

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dynamox
6 Thallium

Re: Host based LVM migrations on HP, Solaris to migrate off from DMX/CX to VMAX

what volume manager is running on Solaris ?

For windows hosts running PowerPath  look into using PowerPath migrator enabler ..it's free , it's online and it's easy.

SAN_AK
3 Argentium

Re: Host based LVM migrations on HP, Solaris to migrate off from DMX/CX to VMAX

I think some hosts run SVM and some are on VxVM for Solaris.

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SKT2
4 Tellurium

Re: Host based LVM migrations on HP, Solaris to migrate off from DMX/CX to VMAX

on step 3 (lvextend), its is better to specify the physical device(s)name too so the mirror extents will be picked from them only. Other wise , if the existing/old disk has free space there is a possibility the mirror extents may get picked from there. we even create a dummy LV to keep the exisitng disks fully occupied then mirror it w/o specifying any PV argument.