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How can I set up the 2 set of msa30 with mirrordisk/ux ?

KPF
Occasional Advisor

How can I set up the 2 set of msa30 with mirrordisk/ux ?

Dear all,

I need help on setting up 2 set of msa30 with mirrordisk/ux. There have 14x74GB disk on each msa30. Can I make three disk group (first dg for oracle data, second dg for oracle log and the last dg for NFS)and mirror it between the 2 set of msa30. And the two rx2620 connect to them are running with serviceguard, is there anything I need pay more attention?

Thanks
4 REPLIES
Torsten.
Acclaimed Contributor

Re: How can I set up the 2 set of msa30 with mirrordisk/ux ?

There are 3 different controllers possible in the MSA30 (single bus, dual bus and multi initiator - 1 connector, 2 or 4).

What do you have?

You need to have the MI (multi initiator) to connect 2 servers.

Hope this helps!
Regards
Torsten.

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JASH_2
Trusted Contributor

Re: How can I set up the 2 set of msa30 with mirrordisk/ux ?

KPF,

You can mirror the three sets of disks, just make sure that you specify which disks you are mirroring to within the volume group. The volume groups will be treated the normal way within service guard, but you will need to make sure that they are properly imported and exported.

Do you want me to be more specific, or can you understand what I mean?

Hope it all goes ok.

Regards,

JASH
If I can, I will!
KPF
Occasional Advisor

Re: How can I set up the 2 set of msa30 with mirrordisk/ux ?

Hi JASH,

How can I setup the volume group and mirror on 2 set of msa30? (use SAM or another things?) Would it be possible to teach me more?

Thanks

KPF


JASH_2
Trusted Contributor

Re: How can I set up the 2 set of msa30 with mirrordisk/ux ?

KPF,

I will assume you have the MI, as Torsten indicated earlier, or you will not be able to have more than one server reading each msa30. I will also assume that you can see the disks on both servers.

Create the volume groups with the number of disks, or the lun, on one of the msa30s, ensuring that max phys volumes etc will alow you to double up, for mirroring. Make a note of all of the disks/luns in each volume group.

#vgdisplay -v /dev/vg??

Create IDENTICAL luns on the other msa30.
Add lun, or identical number of disks into the volume groups, from the second msa30.
This should exactly double the size of you volume group, obviously.
Now you need to note down the additional disks in the volume groups:-

#vgdisplay -v /dev/vg??

Now you have to mirror each logical volume on the corresponding mirror volume:-e.g.

disks on msa30-1 disks on msa30-2

/dev/dsk/c2t2d0 /vg01/lvol1 /dev/dsk/c5t2d0
/dev/dsk/c2t3d0 /vg02/lvol1 /dev/dsk/c5t3d0
/dev/dsk/c2t4d0 /vg03/lvol1 /dev/dsk/c5t4d0

lvextend -m 1 /dev/vg01/lvol1 /dev/dsk/c5t2d0
lvextend -m 1 /dev/vg02/lvol1 /dev/dsk/c5t3d0
lvextend -m 1 /dev/vg03/lvol1 /dev/dsk/c5t4d0

Using SAM could cause problems if there are multiple logical volumes within the volume group, so best to do it manually.

Hope this helps a bit more.

JASH
If I can, I will!