storage suggeston

[certangle]

hi

I am a Ora DBA.want to know some specific thing?

1)what is VSAN??

2) what is the major difference between EVA and XP ??

3) how to calculate how many disk group is required if we want to shift data guard to RAC??(only ome pointer is required)

4) if i need to switch my carrier to storageworks what i need to know basically ??

kind regards

[Johan Guldmyr]

Hi,

1) https://supportforums.cisco.com/docs/DOC-5972 - only used on Cisco SAN switches.

2)
XP - Up to 6 racks? and more complex and control.
EVA (8400) - Max 1.5 racks or 324 disks. Less complex but easy to admin.
EVA is made by HP and XP is a re-branded HDS USP.

Some hds advertisment:
http://forums.hds.com/index.php?showtopic=756

3) XP uses raid/array groups and EVA uses disk groups. They're two different concepts. For the EVA to get most performance you would want to put as many disks in the same disk group.
How big disk group you would require depends on how much load you would put on it (iops, MB/s, response time requirements.. etc)

4) switch from what??

[certangle]

hi

suppose I have EVA can I migrate all to XP and also XP to EVA??how would I do this migration ??

kind regards

NB:-> I asked the last question for my carrier ie. DBA to StorageWorks EVA admin actually.

[Johan Guldmyr]

The XP has a feature that lets you put the EVA behind the XP - external storage.

Maybe with that you can migrate without mounting the old LUN and the new LUN on the same server and copying :)