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Exchange backup DAG (bare metal or just system state) RRS feed

  • Question

  • I have a DAG group of servers DAG01 and DAG02. I was wondering if i back up my DAG database with DPM - is it needs to backup a bare metal also ??? i was just thinking that maybe i must backup just a system state and DAG database ?

    Be real

    Monday, September 10, 2012 8:39 AM

Answers

  • best practice from "How to protect Exchange with DPM 2010 whitepaper":

    • When protecting mailbox databases that are members of a DAG, it is not necessary to select the active mailbox databases in a DAG for protection by DPM. DPM is database role agnostic and can be configured to protect a server that hosts a collection of active or passive mailbox databases.
    • With DPM 2010 you need to configure at least one Full Backup per day. The Full Backup backs up the mailbox database and log files and then truncates the log files. When protecting more than one copy of an Exchange mailbox database (such as when you are protecting multiple members of a database availability group) you should configure one node for full backups and the rest as copy backups. Copy backups do not truncate log files.
    • Microsoft recommends that you protect at least two copies of a mailbox database if Exchange is implemented with inexpensive SATA/JBOD (Just a Bunch Of Disks) disks. As mentioned previously, one and only one backup should be a full backup and additional backups of different copies of the same mailbox database should be copy backups.
    • The DPM 2010 default setting has Exchange 2010 running ESEUTIL on Exchange mailbox databases as a background task to verify their integrity.   DPM 2010 allows you to skip running ESEUTIL on the mailbox database and only use the utility to verify the integrity of the log files
    • If the Exchange DAG node hosting the copy of the mailbox database on which the Full Backup is taken goes down temporarily, it is not necessary to perform any steps on the nodes on which copy backups are taken. If it becomes necessary to switch to another node because the failed node will no longer be available, you need to reconfigure DPM to take a full backup of the new target node. As mentioned earlier, DPM 2010 is not sensitive to as to whether the full backup is taken of an active or passive mailbox database copy - the node on which the backup is taken just needs to be available to DPM.

    Marco Adamo

    • Marked as answer by Voffka_UA Tuesday, September 11, 2012 7:45 AM
    Monday, September 10, 2012 12:34 PM

All replies

  • My advice is to make even the BMR:

    A bare metal backup would grab everything needed to do a full recovery of the server. Note that BMR includes system state. Once the BMR is restored you could then restore any application specific data for example if you have an Exchange server with a C and D drive and the Exchange data is on the D drive you would restore the BMR then restore Exchange data to the D drive.


    Marco Adamo

    Monday, September 10, 2012 9:53 AM
  • Hi

    With exchange you can recover a server from AD and then replay your logs and rebuild your DB. If you have a DAG in place it is also redundant unless all servers fail. Personally i make a backup of the system state in my environment as well as backing up the DB's and logs.

    You can also look here:

    http://social.technet.microsoft.com/Forums/en-US/dpmexchbackup/thread/070c021e-688c-436c-a7be-2422976d5f7c

    and here:

    http://scdpm.blogspot.com/2011/11/bare-metal-recovery-bmr-option-in-dpm.html

    Monday, September 10, 2012 11:59 AM
  • Not really understand you. BMR will backup all data on C and D (if my exchange is on D also....). But why tjen i must backup DAG database ?

    Be real

    Monday, September 10, 2012 12:03 PM
  • best practice from "How to protect Exchange with DPM 2010 whitepaper":

    • When protecting mailbox databases that are members of a DAG, it is not necessary to select the active mailbox databases in a DAG for protection by DPM. DPM is database role agnostic and can be configured to protect a server that hosts a collection of active or passive mailbox databases.
    • With DPM 2010 you need to configure at least one Full Backup per day. The Full Backup backs up the mailbox database and log files and then truncates the log files. When protecting more than one copy of an Exchange mailbox database (such as when you are protecting multiple members of a database availability group) you should configure one node for full backups and the rest as copy backups. Copy backups do not truncate log files.
    • Microsoft recommends that you protect at least two copies of a mailbox database if Exchange is implemented with inexpensive SATA/JBOD (Just a Bunch Of Disks) disks. As mentioned previously, one and only one backup should be a full backup and additional backups of different copies of the same mailbox database should be copy backups.
    • The DPM 2010 default setting has Exchange 2010 running ESEUTIL on Exchange mailbox databases as a background task to verify their integrity.   DPM 2010 allows you to skip running ESEUTIL on the mailbox database and only use the utility to verify the integrity of the log files
    • If the Exchange DAG node hosting the copy of the mailbox database on which the Full Backup is taken goes down temporarily, it is not necessary to perform any steps on the nodes on which copy backups are taken. If it becomes necessary to switch to another node because the failed node will no longer be available, you need to reconfigure DPM to take a full backup of the new target node. As mentioned earlier, DPM 2010 is not sensitive to as to whether the full backup is taken of an active or passive mailbox database copy - the node on which the backup is taken just needs to be available to DPM.

    Marco Adamo

    • Marked as answer by Voffka_UA Tuesday, September 11, 2012 7:45 AM
    Monday, September 10, 2012 12:34 PM
  • Hi,

    If DPM 2010 is used for the protection of servers hosting the Hub Transport and Client Access server roles it is possible to perform a complete bare-metal recovery of the servers hosting these roles.

    But be careful, BMR is not supported for servers hosting Mailbox role (Mailbox database).

    Stephane.


    Please remember to click “Mark as Answer” on the post that helps you. This posting is provided "AS IS" with no warranties. knowledge is valid only if it is shared by All.

    Tuesday, September 11, 2012 10:08 AM
  • So DAG servers BMR is not an option ? so i must backup only the system state and DAG database separetely ???

    Be real

    Tuesday, September 11, 2012 10:31 AM
  • Hi,

    If DPM 2010 is used for the protection of servers hosting the Hub Transport and Client Access server roles it is possible to perform a complete bare-metal recovery of the servers hosting these roles.

    But be careful, BMR is not supported for servers hosting Mailbox role (Mailbox database).

    Stephane.


    Please remember to click “Mark as Answer” on the post that helps you. This posting is provided "AS IS" with no warranties. knowledge is valid only if it is shared by All.


    BMR is supported for servers hosting Mailbox role.

    My DPM blog ystartsev.wordpress.com

    Wednesday, September 12, 2012 1:07 PM
    Moderator