138
NetBackup System Administrator’s Guide - Windows NT Server
4
When adding jobs to drives, NetBackup attempts to add multiplex jobs to
drives that are already using multiplexing. This leaves other drives available
for non-multiplex jobs.
A1
A2
A3
A4
A5
B1
B2
B3
B4
1
2
3
4
6
7
8
Drive 1
Drive 2
Storage Unit
Max mpx per drive = 5
Clients
Clients
Schedule A
Schedule B
max mpx per drive = 5
max mpx per drive = 2
Jobs from clients A1 and A2 start on drive 1. Schedule A max mpx of 2 is reached for this drive.
Jobs from clients A3 and A4 start on drive 2. Schedule A max mpx of 2 is reached for this drive.
Jobs from clients B1, B2, and B3 start on drive 1. Storage unit max mpx is reached for this drive.
Jobs from clients A1 and A2 finish on drive 1. Jobs for B1, B2, and B3 are still running, however, so
Job from client A5 starts on drive 1. This is the last job for schedule A.
1
2
3
4
5
6
7
8
13
9
9
13
Assume Schedule A begins first: (note that the schedules can be in the same or different classes).
Job from client B4 starts on drive 2. All jobs are now running for schedule B.
10
11
Schedule A max mpx of 2 still prevents client A5 from starting.
Job from clients B1 and B2 finish on drive 1. Only the job for B3 is still running on this drive.
11
10
12
12
5
NetBackup 3.2 System Administrator's Guide for Windows NT
NetBackup 3.2 System Administrator's Guide for Windows NT