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DPM 2010 speed is only 3MB / minute? RRS feed

  • Question

  • I really don't understand why backup take ages.

    Base on completed job I calculate average is only backup with 3MB per a minute.

    This is something wrong, what could happen on DPM running backup to this slow?


    • Edited by Oneoa Friday, March 2, 2012 3:43 AM
    Friday, March 2, 2012 2:45 AM

All replies

  • whats your network?

    whats your disk subsystem?

    have you checked for array failure?

    what raid level are you running?

    do you have enough ram in your DPM server? (is SQL stealing all the RAM)

    Is this creating a disk backup in DPM i.e synchonizing/consistency check/recovery point.

    Or is it tape backup?

    Saturday, March 10, 2012 12:25 AM
  • Hello,

    How are you determining that the transfer rate is 3MB per minute?



    Regards, Shane. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. This posting is provided "AS IS" with no warranties, and confers no rights.

    Saturday, March 10, 2012 6:41 PM
  • Like I mention before, I calculate average from total completed job.
    • Edited by Oneoa Monday, March 12, 2012 1:12 AM
    Monday, March 12, 2012 1:11 AM
  • DPM server is just DPM nothing else.

    Mean while PS mostly are running Windows 2003 R2 and they seating at RAID-5 disks.

    Connection between PS and DPM server is 1Gbps ethernet with teaming fault tolerance.

    DPM server had 24GB of RAM and running as host physical server (non-visualization)

    Backup is directly to TAPE not to DISK.


    • Edited by Oneoa Tuesday, March 13, 2012 1:42 AM
    Monday, March 12, 2012 1:17 AM
  • Hello,

    If you are going by the amount of data moved via consistency check, then this would be incorrect. A consistency check performs a block by block verification. It may take an hour (on a large datasource) to detect any changed blocks. 

    If after that hour DPM finds 1 gig of data to transfer, DPMRA moves it over to DPM.  This does not mean that the transfer rate is 1 gig per hour but rather after an hour of performing a CC, we found 1 gig of data that needs to be brought over so here it is DPM.


    Regards, Shane. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. This posting is provided "AS IS" with no warranties, and confers no rights.

    • Proposed as answer by andreww Friday, March 16, 2012 4:50 PM
    Monday, March 12, 2012 10:47 PM
  • Not sure by consistency check you mean, how we check the backup using consistency check? So far I understand there is no option on this.

    Anyway if this mean by "Check backup for data integrity (time consuming operation)"? No, we not enable this. Tape options for short-term protection and long-term protection are compress data enabled. Optimize performance by enable on-the-wire compression.

    Below data we calculated and get average of it.

    Tape backup  15/2/2012 20:42 0:33:28 11.38 MB
    Tape backup  15/2/2012 19:33 1:34:59 42,536.63 MB
    Tape backup  15/2/2012 19:32 0:00:40 0.31 MB
    Tape backup  15/2/2012 19:00 0:32:48 99,336.75 MB
    Tape backup  15/2/2012 7:47 12:54:15 6,860.81 MB
    Tape backup  15/2/2012 7:47 4:18:55 12.13 MB
    Tape backup  15/2/2012 6:12 1:34:27 45,093.31 MB
    Tape backup  15/2/2012 3:08 3:04:32 109,714.06 MB
    Tape backup  14/2/2012 14:46 0:36:37 13.69 MB
    Tape backup  14/2/2012 14:44 0:01:42 0.31 MB
    Tape backup  14/2/2012 14:01 0:41:49 133,903.00 MB
    Tape backup  14/2/2012 9:21 20:14:50 51,816.44 MB
    Tape backup  14/2/2012 6:30 2:51:26 291,396.31 MB
    Tape backup  13/2/2012 15:17 22:41:38 2,463,277.63 MB
    Tape backup  13/2/2012 13:58 1:18:02 122,646.00 MB
    Tape backup  13/2/2012 2:30 5:04:44 1,024,010.56 MB
    Tape backup  9/2/2012 21:55 11:37:07 11,853.13 MB
    Tape backup  9/2/2012 21:16 0:39:12 14.69 MB
    Tape backup  9/2/2012 19:35 1:40:25 72,268.00 MB
    Tape backup  9/2/2012 19:00 0:35:18 101,772.94 MB
    Tape backup  9/2/2012 19:00 21:17:29 51,354.63 MB
    Tape backup  9/2/2012 0:18 12:16:17 15,015.00 MB
    Tape backup  8/2/2012 20:10 4:07:31 457,937.38 MB
    Tape backup  8/2/2012 19:33 0:37:13 5.94 MB
    Tape backup  8/2/2012 19:00 0:33:23 95,095.06 MB
    Tape backup  7/2/2012 20:39 12:13:13 185,829.19 MB
    Tape backup  7/2/2012 20:01 20:45:24 391,813.50 MB
    Tape backup  7/2/2012 20:00 0:38:43 59.94 MB
    Tape backup  7/2/2012 19:01 0:59:24 160,817.25 MB
    Tuesday, March 13, 2012 2:03 AM
  • Hello,

    So you are only referencing tape backup speed then, correct?
    The speed at which data is written to tape hinges on the hardware in use. 
    What is the make and model of your tape device? Are you sure you have the latest drivers for it?



    Regards, Shane. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. This posting is provided "AS IS" with no warranties, and confers no rights.

    Thursday, March 15, 2012 10:03 PM
  • Shane's explanation is the best, IMHO.

    However, your maths are also fault. You claim an average of 3mb/m, so let's look at your first two lines in your log above.

    Tape backup  15/2/2012 20:42 0:33:28 11.38 MB (0.36mb/m)
    Tape backup  15/2/2012 19:33 1:34:59 42,536.63 MB (452mb/m)

    You can't take all the jobs, sum them up, take all your time and then take an average for that. It doesn't work that way.


    • Edited by andreww Friday, March 16, 2012 4:49 PM
    Friday, March 16, 2012 4:45 PM
  •    Backing up to tape only IS tedious, no doubt about it.  Doesn't matter what hardware or OS, putting data to tape directly from the target server is slower using DPM that many other backup software products.

      If there is no replica on disk, the tape job moves data from the target server to the tape, instead of a volume on the DPM server to tape.  DPM was designed for disk backups.  <---period

    Thursday, June 28, 2012 6:39 AM
  • Agree, and most worse is incremental tape backup.

    the time consume is unbelievable nonsense.


    DPM 2010 with latest roll-up (KB2615782) | DELL Server R710 (Windows 2008 R2 SP1) RAM: 24GB PF: 36-60GB | DELL TL4000 (4 Drives) | DELL TL2000 (2 Drives) | D2T Backup No Disk Pool (Electric & Disk Costly) | And still struggling and monitoring... Battle continues... life never happy ever after.. :(

    Monday, July 9, 2012 7:29 AM