Move VA7100 Data To SAN - Need Suggestions

[Basheer_2]

Hello

1) RP7410, VA7100, HP 11.11
VG1, One LV - 28GB, PVs=2
VG2, Five LVs - Tot 180GB, PVs=1
VG3, Six LVs - Tot 600GB, PVs=6

Want to Move this to SAN
Total 4 FCA's
2 going to VA7100
2 Going to SAN - EVA 5000
secure path Ver 3.0e will be installed

I want to do this.
1) Create Vdisks (EVA 5000)
2) Add each Vidks to Each group
3) Mirror VG1 VG2 VG3 with the vdisks from SAN
4) after Mirror Successful, Remove PVs from VA7100
5) disconnect VA7100

Is this the way to go
what's the best way to copy Data
SAN - Vdisk first start with raid0, after mirror successful make it vraid5.

Have 4 Hours of sys down time.
Any other Suggestions

[Patrick Wallek · Accepted solution]

Your scenario is definitely do-able. The one caveat is going to be the size you make the Vdisks on the EVA, and the values of PE Size and Max PE per PV in the current VGs.

If you make the Vdisks the same size as the LUNs from the VA, you shouldn't have issues with MAX PE per PV.

You may also want to look at the value of MAX PV, especially on VG3 that currently has 6 PVs. Make sure you have enough room to grow the VG the way you want to.

Just be aware that the mirroring may take a while. I don't know if all 6 LVs in VG3 would finish in 4 hours. However, I have done a similar data migration via mirroring while a system was in use and had no complaints from users. You may have different results, though.

Good luck.

[Luk Vandenbussche]

Hi,

I have migrated once a VA7100 to an EVA3000
I added the EVA Luns to the volumegroups which contained the LUNS of the VA.

I mirrored al the filesystems to the EVA.
Then i removed the mirror from the VA7100.

Since mirroring can be done online you don't need a downtime.

Good luck

[Basheer_2]

Thanks Patrick, Luk

Patrick:
vg1, PE Size=16M, MAx PE/PV=2170
vg2, PE Size=16M, MAx PE/PV=11391
vg3, PE Size=4M, MAx PE/PV=30603

Is it good to create the same size vdisks
(which one initially, thinking of vraid0)

Do you have any steps an in exact order that i need to follow.

Thanks for any help

[Luk Vandenbussche]

Hi Basheer,

This is your maximum lun capacity

vg1 : 34 GB
vg2 : 182 GB
vg3 : 122 GB

It is good to create the same disk size, this makes the migration a lot easier (less downtime when to work with mirror/UX)

But it is also advisable to create directly VRAID1 or VRAID5 devices. With VRAID0 you don't have any redundancy. In case off one disk failure in your EVA you can only restore from backup. VRAID0 is not a good solution for a device.

Good Luck