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July 25th, 2010 22:00
Backup of a DPM Storage Pool with Legato Networker
Hi,
I have configured "backup to disk" in my Legato Networker V7.4 using adv_file device. I backup to 4 LUN's on a SAN that I see as ocal drives on my Legato server. So far, so good. In addition to this, I make on-line backups of my Windows VM's running on Hyper-V servers. Those VHD files are stored on another LUN also seen by my Legato server. I now want to backup to tape this DPM disk (or the files on this DPM storage pool) using Legato. But there is no drive letter assigned to this disk; the disk is even not formatted with NTFS.
My question: How can I save (to tape) using Legato, the information that is stored on the disk holding the backups of the VM's made with DPM2010 ?
Rgds,
Johan
dugans1
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186 Posts
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July 25th, 2010 22:00
Johan,
Stage the data to tape.
one backup is to the AFTD and the stage job is from the AFTD to tape based on a hi water mark of say 80% of the AFTD Capacity. i use it all the time
dugans1
2 Intern
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186 Posts
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July 25th, 2010 23:00
I normally create a pool for staging to tape as the data could be 2 places. either on the source "Disk" or Target "Tape" depending on the tie Delay
Create a new staging set. Configuration>Staging right click new. and the disk locations should be listed. "D:\DiskStore1" or what ever you called it.
It must be there or your not backing up to it.
Then you can create the destination for tape out.
Johans2
100 Posts
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July 25th, 2010 23:00
Hi,
I have looked into staging. I can specify "Devices" as "Source to backup" i suppose and as "Destination Pool" as one of my Tape Pools (Pool1) .
Questions:
- I don't see in "Devices" my unformatted disk holding the DPM backups. So, I cannot select the source I want to stage to tape ????
- Does the watermark, mean that the staging is automatically done when a certain amount of disk space on the source is filled ? How does this interact with my regular nightly backups ? There is no "Legato schedule" as in the "normal" backups ?
Johan
dugans1
2 Intern
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186 Posts
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July 26th, 2010 01:00
well thats just stupid,
No MS OS is going to be able to read a partition that is not formatted in a file format it can read. Surely Data Protection Manager DPM can backup to an NTFS volume. I find it hard to accept that it can't.
dugans1
2 Intern
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186 Posts
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July 26th, 2010 01:00
Well you can't mate.
you either need to have the disk as
A: Mount point, will require NTFS file system
B: format the disk and present it as a Disk to the OS.
Can i ask why you didn't do this in the first place?
Johans2
100 Posts
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July 26th, 2010 01:00
I can see the disk (that I want to backup as source disk) in Disk Management of the OS. It is seen as a "Basic disk" and is "on-line" and "Unallocated". THERE IS NO DRIVE LETTER ASSIGNED. Even after assigning a drive letter (H:) without formatting it with a NTFS filesystem because DPM does not want that, Legato does not see the disk/drive.
But in Legato -> Configuration -> Staging -> New, I only see my 4 SAN disk being formatted with NTFS and having a drive letter assigned. Legato does not see the disk in the Devices tab of Staging....How can I specify D:\Diskstorage1 if there is no drive letter assigned ????
Johan
Johans2
100 Posts
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July 26th, 2010 01:00
DPM2010 needs an unallocated disk without a filesystem to put its backups on. Otherwise, it considers the disk as full.
Johan
Johans2
100 Posts
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July 26th, 2010 01:00
DPM of course is able to read from that disk. In no time, I can bring back (restore) a VM into the Hyper-V.
So, I don't see for the moment a way to backup that "backup disk" of DPM. Legato seems not be able to do it. Maybe a next version ?
Johan
coganb
736 Posts
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July 27th, 2010 04:00
Hi Johan,
I think what you are looking for is functionality offered by NetWorker Module for Microsoft Applications:
Check out the Administration Guide, Chapter 13 - 'Microsoft Data Protection Manager Backup and Recovery'
NetWorker Module for Microsoft Applications Release Notes
http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-010-430.pdf
NetWorker Module for Microsoft Applications Administration Guide
http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-010-428.pdf?
-Bobby