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тАО01-29-2010 10:21 PM
тАО01-29-2010 10:21 PM
FATA Drives as Default Diskgroup on EVA
I know that HP recommends FC drives for default DG. I have an EVA4400 with only 10 FATA drives and it would be used for archiving purposes only. Will the current configuration work well for me or should I buy 8 additional FC drives for default DG?
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тАО01-30-2010 03:34 AM
тАО01-30-2010 03:34 AM
Re: FATA Drives as Default Diskgroup on EVA
If you're going to do backups (sequential writes) to that EVA, the FATA drives will do well, 80 MB/s writting on a RAID 5.
You need 15K FC drives if you're going to do random reads or writes.
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тАО01-30-2010 05:17 AM
тАО01-30-2010 05:17 AM
Re: FATA Drives as Default Diskgroup on EVA
As far as I know, default disk group also stores some metadata (like block tracking info). Now I wonder using FATA drives as default disk group may cause performance impact on the whole EVA. Can you help me?
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тАО01-30-2010 05:34 AM
тАО01-30-2010 05:34 AM
Re: FATA Drives as Default Diskgroup on EVA
this is stored on the quorum disks. If you add disk groups, one quorum disk of five will be transfered to the new diskgroup. I don't think that this is a big performance impact.
Regards,
Patrick
Patrick
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тАО02-01-2010 11:31 AM
тАО02-01-2010 11:31 AM