Design question - DPM and Disk storage RRS feed

  • Question

  • Hi,

    we are planning to buy new storage for our 15 DPM servers. Because of that I have some questions regarding the disk profile:

    1. Read / Write - Storage profile
    What does DPM use more - read or write / sequential or random?
    Perhaps there is a recommendation for a IOMeter Profile?

    2. RAID Level
    I know this: (so MS recommends RAID5)
    but we have to backup more than 25 servers per site with quite big fileserves.
    Does anyone really know I f we would have an advantage when using RAID50 because of better write performance?

    3. cluster / block size
    What is the the default block size DPM uses?

    Thanks in advance


    Tuesday, October 25, 2011 11:35 AM


  • Hi,

    I answer it myself:

    1. Read and write usually a bit more reads
    RP cause reads and writes, sync jobs more reads

    DPM uses sequential read & writes while doing IO on DPM storage pool

    2. I did some testing but differences were not that big

    3. DPM uses 4kb cluster size when formatting storage pool volumes



    My postings are provided "AS IS" with no warranties and confer no rights

    Tuesday, February 7, 2012 2:38 PM