EVA8000 Expansion Advice

[Andrew_Read]

We are expanding an EVA8000 2C8D to a 2C12D

The EVA has 2 disk groups:
11 Columns of 8 146GB FCSCI
2 Columns of 8 500GB FATA
This provises us with Shelf Redundancy

We have added the additonal 4 Disk shelves, and placed 26 450GB FCSCSI in the EVA but have not grouped any of these new disks.
We have also had the latest firmware etc applied.

We would like the 26 new disks added to the existing FCSCSI disk group.

How should we do this?

I've attached an excel of the current setup.

I thought that we we group in a new column of 14 450GB disks. Then slowly ungroup and regroup the 146's to make room for new colums of 450GB disks - see attachements.

Any advice appreciated.

Regards,

Andrew

[Andrew_Read]

Here is the proposed layout.

[IBaltay]

Hi,
first,
mixing of different disk sizes and RPM disk are possible but it is not the best practices performance recommendation, so you can consider the new separate 450HDD disks DG as an option especialy if you have quite a lot of physical HDD at the beginning (26)

second,
the RSS default is 8 physical disk: therefore
so the method is the following:
a) group the 8 disks from bay14/enc13 till bay14/enc5 included
b) group the 8 disks from bay14/enc4 till bay13/enc10 included
c) group the bay13/enc9 till bay13/enc1 included
d) then group the rest 2 disks into the newly created DG (450GB) - it will automaticaly create the 2 RSS with 9 disks

[Uwe Zessin]

I would fill bay 9 in all enclosures with disk drives, even if you have to move 4 disks more, to have a maximum vertical distribution.

Did you notice that the Excel sheet shows more 450GB disk drives than the PNG image?

[Andrew_Read]

Thanks for the advice.

The excel sheet should have only shown 26 450GB drives.