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September 2nd, 2013 02:00
Backpacking up a server with data of 170TB+
Any suggestions to backup a server (hp 4540) having multiple filesystems (total capacity of 170tb+) with networker 8?
We want to backup DPM server which would hold data in tb's. Officially there is no support to backup DMP via Networker. So is flat file backup the only resort?
Backup would take multiple days time to complete if backed up to tape which unfortunately is the requirement.
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ble1
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September 2nd, 2013 03:00
You mention DMP and DPM so I'm not sure what you refer to - DPM as MS backup or DMP as Digital Media Platform? Regardless, you have alot of data there and I would suggest to connect via FC tapes directly to host (enough of them) and spread sessions as per multiple file systems or even folders (I believe 8.1 which is DA has some improvements in that respect, but perhaps you should not rush). Obviously, if this is on dedicated storage, having snapshot of it and then backup snapshot via proxy would be better as:
a) you would backup in form of snapshot
b) you could backup snapshot to tape without any direct impact to production server
ble1
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September 2nd, 2013 04:00
NMM once upon the time used to support first instance of DPM, but since then this support has been dropped (mainly because that would be backup of the backup and NMM alone can do the same thing as DPM). However, if you use DPM, I have to wonder why not use tape with DPM then? See: How DPM Uses Tape
If using NW, then simply use NMM. Using both I'm afraid creates overhead in backup and even more in restore (as you have stepping stone in restore). However, when it comes to snapshots with storage, it all really depends on what your storage is. External storage arrays will have snapshot capabilities which you can utilize to create snapshot of volumes you wish to protect. This snapshot can then be exported/mounted on some other host (storage node) and be backed up from there. This may or may not include additional scripting work to make it run flawlessly and with all error checks. As such, it may not be very elegant, but if you plan to use both, then you will have to consider it.
Ankur_Dubey
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September 2nd, 2013 04:00
Thanks Hrvoje for your reply.
DPM 2012 - data protection manager from MS.
Here is my scenario.
DPM would backup the databases (from sharepoint,exchange servers) to disk (i.e to DPM server itself with local storage), a script will be used to take snapshots of this data and eventually be mounted as E:\ D:\ etc drives on the DPM same server. a 30 day retention to disk storage will be maintained by DPM
BUT for archival to tape, networker must be used to backup these drives once a month to perform a full backup.
Technically networker does the job, as i tested it for small data, but for such a large data i am lack of ideas and running out of best performance tuning options from networker side.
Could you please elaborate on how to backup snapshots via proxy?
Thanks