BE Throughput rate

[mitchell427]

Could anybody give me a rough idea on what the backup throughput rate should be. Our backup server is a Compaq Proliant 5500 clustered server with a Compaq 35/70 DLT drive on each cluster. At the moment the throughput is about 200mb/m when backing up a snapserver but falls to about 25mb/m when backing up exchange mailboxes which takes 11hrs to backup 16gb. We use BE 7.3 and NT4 Server with SP6.

Thanks in advance for all help

 

[ChrisRAnthony]

Have you installed the Remote agents on all the servers?

 

[mitchell427]

The remote agents have been installed on all servers.

 

[jamkey]

Mailbox backups are slow b/c of MAPI... Mailbox backups have to use Outlook or a MAPI dll to log into each Mailbox individually and transfer the data through this protocol. Ever tried to send a large file as an attachment (over 5MB) through Outlook? Watch how long it takes to get out of your outbox... now take this amount of time and you should see that 25MB/min is about right. I think there are some technotes on this. If you can't afford the time and are using Exch 5.5 I suggest turning on the Deleted item protection time in Exchange itself and let the users manage recovering their own "accidentally" lost e-mail. Of course this won't help if somehow the whole mailbox gets deleted, but Exchange 2000 does have protection for that kind of a foul up.

 

[mitchell427]

Thanks for the help it kind of makes sense now.

mitchell427