Computer Associates BABWBR1151S40 User Guide - Page 23

Number of Threads, Thread Priority, Maximum Backup Size, Maximum Restore Size, Retry Counter

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Post-installation Tasks ■ Number of Threads--This is the number of threads you want to use to connect to MAPI per session. If you increase this number, it increases performance, but also increases CPU utilization. The default Number of threads value is 1.5 multiplied by the number of CPUs rounded down and the supported range is between 1 and 64. ■ Thread Priority--This is the priority you want to set for your threads: low, medium, or high. If you increase the priority, the operating system increases the CPU cycles to the thread. If you increase the number of threads in the Number of threads field, you should decrease the thread priority to lessen the impact on your server. ■ Maximum Backup Size--To allow an efficient flow of information during backup, data is stored in a transition queue. This setting lets you configure the size of this queue. The default Max queue depth value is 256 items and the supported range is between 32 and 1024. ■ Maximum Restore Size--This sets the threshold for memory that SIS restores will use before saving objects to the temporary location you specify. If the amount of cached SIS data exceeds this value, you can increase the value to gain better performance. If the amount of cached SIS data exceeds the value you select, the restore is not affected, but a notification message appears in the activity log. The default Max Restore memory value is half of your system RAM and the supported range is between 32 and 1024. ■ Retry Counter--If a MAPI error or time out occurs while trying to retrieve an object from Exchange Server, this setting lets you control the number of times you want to retry. This is useful for when your backups are competing with third-party applications or during periods of high volume activity. If a MAPI error or time out occurs, the object is skipped, but the backup continues and a notification message is displayed in the log location you specify. The default Retry counter value is 2 and the supported range is between 0 and 10. ■ Retry Delay--If a MAPI error or time out occurs while trying to retrieve an object from Exchange Server, this setting lets you control the delay between retries. This is useful when your backups are competing with third-party applications or during periods of high volume activity. If a MAPI error or time out occurs, the object is skipped, but the backup continues and a notification message is displayed in the Log location you specify. The default Retry Delay value is 20 and the supported range is between 0 and 60. Chapter 2: Installing the Agent 23

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Post-installation Tasks
■
Number of Threads
--This is the number of threads you want to use
to connect to MAPI per session. If you increase this number, it
increases performance, but also increases CPU utilization. The default
Number of threads value is 1.5 multiplied by the number of CPUs
rounded down and the supported range is between 1 and 64.
■
Thread Priority--
This is the priority you want to set for your threads:
low, medium, or high. If you increase the priority, the operating
system increases the CPU cycles to the thread. If you increase the
number of threads in the Number of threads field, you should decrease
the thread priority to lessen the impact on your server.
■
Maximum Backup Size
--To allow an efficient flow of information
during backup, data is stored in a transition queue. This setting lets
you configure the size of this queue. The default Max queue depth
value is 256 items and the supported range is between 32 and 1024.
■
Maximum Restore Size
--This sets the threshold for memory that SIS
restores will use before saving objects to the temporary location you
specify. If the amount of cached SIS data exceeds this value, you can
increase the value to gain better performance. If the amount of cached
SIS data exceeds the value you select, the restore is not affected, but
a notification message appears in the activity log. The default Max
Restore memory value is half of your system RAM and the supported
range is between 32 and 1024.
■
Retry Counter
--If a MAPI error or time out occurs while trying to
retrieve an object from Exchange Server, this setting lets you control
the number of times you want to retry. This is useful for when your
backups are competing with third-party applications or during periods
of high volume activity. If a MAPI error or time out occurs, the object
is skipped, but the backup continues and a notification message is
displayed in the log location you specify. The default Retry counter
value is 2 and the supported range is between 0 and 10.
■
Retry Delay
--If a MAPI error or time out occurs while trying to
retrieve an object from Exchange Server, this setting lets you control
the delay between retries. This is useful when your backups are
competing with third-party applications or during periods of high
volume activity. If a MAPI error or time out occurs, the object is
skipped, but the backup continues and a notification message is
displayed in the Log location you specify. The default Retry Delay value
is 20 and the supported range is between 0 and 60.
Chapter 2: Installing the Agent
23