Anyone used V12 with Exchange Document Level?

[roger85]

Hi all,

I currently use Arcservce 11.5sp4 with the Standard Exchange Agent and during my Brick Level Backups i get max speed around 100mb/min. I understand this is normal, however i understand on version 12 its now called Exchange Document level and works in a different method, and hopefully a lot faster ?

Is anyone here able to confirm what are the acutal real speeds when backing up brick lever mailboxes.

And also can you please confirm we can restore using the STANDARD Document level for mailboxes.

Thanks guys.

Roger

 

[vschumpy]

Document level backup has been around for a while - even in 11.5 it is called the premium exchange agent. Backup speeds, especially brick/document level are highly subjective and it's impossible to guess without trying your own installation.

One advantage document level has over the old brick level is that you can run concurrent backups of different mailstores concurrently using multiplexing and document level - take a look at the exchange premium add on manual on your 11.5 CD and it'll give you a better idea.

 

[roger85]

Thanks buddy,

i know that the document level has been around for some time and called Premium Version, on the new CA Standard SBS version 12 they DO NOT supply the Exchange Agent, its called Documents Level STANDARD, not the Premium.

I'm trying to find out from people wherther its any faster on backing up mailboxes before i start upgrading the software.

Thanks

 

[vschumpy]

It is inherently faster than the old brick level because it uses a more recent and more efficient API, but again a lot depends on your individual installation.

How much performance improvement you will get is like subjective, and depends on a lot of the same things that affected the old brick level backup eg mailstore fragmentation, memory, CPU, disk channel, etc. The limitation is not so much the API anymore as it used to be, but more down to the hardware you have available.

Perhaps one of the biggest improvements over the original brick level is that it uses single instance store.

So for example a mail with attachment sent to 20 people would be backed up fully 20 times with the old brick level, whereas with the new agent it will be backed up once fully with 19 pointers to the original message, therefore potentially saving tape space and time during backup.

It's really a suck it and see in your own environment, although I appreciate it can be difficult to do this in your production environment.

 

[hemps37]

I'm getting twice the speed going from Brick (11.5) to Doc (12). This is on a 35gb mailstore.