Hi all

 

Scenario:

Netbackup version: Netbackup 6.5.1

Backups: Exchange Information Store and Exchange mailboxes.

 

Backup Hardware:

1 x LTO4 drive.

Storage Unit: 1 x drive with max streams per drive set to = 8.

 

Information store policy:

Limit jobs per policy = 4

Allow mutable data streams = ticked yes.

File List = Microsoft Information Store:\*

# There are 2 x Information stores, One and Two. The backup produces 2 x backup streams.

 

Mailbox policy:

Limit jobs per policy = 4

Allow mutable data streams = ticked yes.

File List :

NEW STREAM

Microsoft Exchange Mailboxes:\[a-h]*

NEW STREAM

Microsoft Exchange Mailboxes:\[g-l]*

NEW STREAM

Microsoft Exchange Mailboxes:\[m-r]*

NEW STREAM

Microsoft Exchange Mailboxes:\[s-z]*

# The backup produces 4 stream.

 

Result:

Both the Information Store Backup and the Mailbox Backup run at the same time. (Not best practice, but they do). The two streams of the Information Store backups starts and run. The four streams of the Mailbox backup start but only two run and two queue.

 

Summary:

STU = 1 drive x 8 streams per drive.

Multiplexing of each policy’s schedule = 4.

Allow multiple data steams = yes

Master server global setting for “max jobs per client” = 99.

 

Problem:

 

Although the storage unit allows 8 streams to it and the two policies produces 6 streams between them, only 4 run and 2 queue. Why? Any ideas?

 

Thanks.