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Disk Consumption RRS feed

  • Question

  • Are the replica "bits" (As opposed to the shadow copy bits) in the storage pool area always equall to the size of SQL server you are backing up?  As for exchange would it simply be the size of the storage groups? 

    I am wondering about disk space allocation for static databases if it is wise to overif=de the default allocation values?

    Tuesday, October 12, 2010 1:09 AM

Answers

  • Hi

    The Reolica Volume contains the actual data as you problably know, all the changes is placed in the Recovery Point volume. The replicas data is equal to the data on the SQL server as it were on the first day of you retention time, make sense?

    Regarding the disk allocation of the replica- and revocerypoint volume DPM uses this equations:

    Replica Volume = Data source size x (1 + log change) / (alert threshold - .05)

    Recovery Point = 2.5 x retention range in days x log change x data source size + 1600 MB

    If you got a static database you will never have any changes what so ever. if you use the shrink function, what happens? You could in theory re-create your protection and choose a very little volume for the recovery point volume and choose not to use the Auto-Grow function for DPM.

     

    BR

    Robert Hedblom



    Check out my DPM blog @ http://robertanddpm.blogspot.com

    Tuesday, October 12, 2010 3:32 PM
    Moderator