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Libertas
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VBR file mechanism, & how to store on removable disks

Post by Libertas »

Hi guys, I am not sure if this has already been covered but as I couldn’t find an answer to this particular question I thought it best to make a new post. Please direct me to the thread if it has been covered and apologies for not being able to find it.

Currently we have the following:

HQ:
3x hosts each with DAS (direct attached storage)
1x backup server with 12TB of Storage + Veeam B&R

3x Remote Sites (100mb connection)
1x local host with DAS

We currently backup all VMs (using CBT) on all hosts, including the remote sites, back to the backup server at HQ every night, as that is server acts as our online backup device. Due to the size of backups (800gb for the HQ VMs and 1.2tb for all the remote sites together) the backup job is broken into two, one specifically for HQ VMs and the other for the Remote Site VMs.

The following is a current list of .vbr files for the Remote Sites due to the snapshot numbers:

Code: Select all

Date             Time   Size             File Name
29/07/2010  02:48   946,226,066,432 Remote Sites.vbk
14/07/2010  02:00    16,914,085,888 Remote Sites2010-07-12T230048.vrb
15/07/2010  01:59    18,594,142,720 Remote Sites2010-07-13T230034.vrb
16/07/2010  23:00    18,957,195,264 Remote Sites2010-07-14T230026.vrb
17/07/2010  02:11    13,904,305,664 Remote Sites2010-07-15T230040.vrb
18/07/2010  01:04     8,112,370,688 Remote Sites2010-07-16T230031.vrb
20/07/2010  03:17    23,097,965,056 Remote Sites2010-07-17T230034.vrb
21/07/2010  02:13    17,250,399,232 Remote Sites2010-07-19T230040.vrb
22/07/2010  23:00     6,987,456,000 Remote Sites2010-07-20T230024.vrb
23/07/2010  01:57    18,235,590,656 Remote Sites2010-07-21T230041.vrb
24/07/2010  20:04    33,054,820,864 Remote Sites2010-07-22T230037.vrb
27/07/2010  03:22    28,778,994,176 Remote Sites2010-07-23T230043.vrb
28/07/2010  02:25    17,268,853,760 Remote Sites2010-07-26T230037.vrb
29/07/2010  02:47    25,152,062,464 Remote Sites2010-07-27T230046.vrb
              15 File(s) 1,192,534,308,864 bytes
The following is a current list of .vbr files for the HQ due to the snapshot numbers:

Code: Select all

Date             Time   Size             File Name
29/07/2010  05:56   251,227,789,312 HQ.vbk
16/07/2010  02:00    39,915,399,168 HQ2010-07-14T020047.vrb
16/07/2010  05:22    38,743,207,936 HQ2010-07-15T020046.vrb
17/07/2010  05:32    41,317,891,072 HQ2010-07-16T020029.vrb
18/07/2010  04:59    35,828,445,184 HQ2010-07-17T020055.vrb
21/07/2010  02:00    44,379,777,024 HQ2010-07-18T020026.vrb
21/07/2010  05:58    40,606,874,624 HQ2010-07-20T020040.vrb
23/07/2010  02:00    40,381,937,152 HQ2010-07-21T020054.vrb
23/07/2010  05:26    38,528,061,952 HQ2010-07-22T020028.vrb
24/07/2010  05:39    41,492,793,856 HQ2010-07-23T020047.vrb
27/07/2010  02:01    34,088,546,304 HQ2010-07-24T020030.vrb
27/07/2010  06:34    46,487,781,376 HQ2010-07-25T020024.vrb
29/07/2010  02:00    37,680,398,848 HQ2010-07-27T020101.vrb
29/07/2010  05:55    39,657,374,720 HQ2010-07-28T020056.vrb
              15 File(s) 770,336,278,528 bytes
Attached to the backup server we also have a removable hard disk based enclosure which allows us to connect 2tb SATA disks (using eSATA connectivity) on a daily rotation basic, i.e. every day of the week has its own 2tb hard disk which is removed at the end of the day and recycled after 1 week.

What I need to do is to copy the .vbr files from the backup server's internal storage to the locally attached removable hard disk on a nightly basis. The problem tbeing that if I try to copy the entire backup folders, I do not have enough space on 1 2tb disk, and it takes far too long.

The question I have is when the Veeam backup job runs and creates new .vbr files, do those newly created .vbr files contain all data from all VMs (as whole entities), or is each .vbr file an incremental additional to the last. Therefore, if I just copy the last .vbr file to another location, would I be able to restore all VMs as of their last snapshot point without any difficulties, or do I need all .vbr files within each folder to be able to do that?

I am not sure if I have explained that properly, and apologise if I have not and have caused more confusion.

Thank you for your help.
Farhad

Gostev
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Re: VBR file mechanism, & how to store on removable disks

Post by Gostev »

Hello Farhad, you need to copy VBK every day (not VRB), which is full backup of latest state.
Veeam Synthetic Backup Explained

For more information, search this forum for
vbk vrb offsite

Thanks!

Libertas
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Posts: 31
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Joined: Jan 01, 2006 1:01 am
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Re: VBR file mechanism, & how to store on removable disks

Post by Libertas »

Gostev wrote:Hello Farhad, you need to copy VBK every day (not VRB), which is full backup of latest state.
Veeam Synthetic Backup Explained

For more information, search this forum for
vbk vrb offsite

Thanks!
Thank you for the information.

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