Setting The Media Mount Timeout; Notes On Using Batch Files Or Shell Scripts - Fujitsu ETERNUS LT140 User Manual

Chapter 4 Setting Backup Software
4.1 NetBackup
4.1.5

Setting the Media Mount Timeout

• For details on how to set the media mount timeout for NetBackup, refer to the manual supplied with
NetBackup.
For UNIX or Linux, refer to "Symantec NetBackup X.X Administrator's Guide for UNIX and Linux, Volume I".
For Windows, refer to "Symantec NetBackup X.X Administrator's Guide for Windows, Volume I".
• Use the following formula to determine what media mount timeout value should be set for the LT140:
Media mount timeout (in minutes) = 4  Number of installed tape drives + 43
For example, the media mount timeout value is 75 minutes for the LT140 in which eight tape drives are
installed.
When the media mount timeout is set to "0", the LT140 can be operated with an infinite timeout value.
However, using an infinite timeout value may prevent a backup/restore failure from being detected. Set-
ting a media mount timeout value that is based upon the configuration is recommended.
• The media mount timeout value is a minute-based value for Windows and a second-based value for Solaris
or Linux.
"NetBackup X.X" shows the software name and version for example "NetBackup 7.5". Please refer the
appropriate manual to the software version.
4.1.6

Notes on Using Batch Files or Shell Scripts

When multiple backup/restore operations are executed at the same time by using batch files or shell scripts,
the LT140 may become busy due to multiple NetBackup robot operations. This may cause any backup/restore
operations to fail. Use of the NetBackup Administration Console is recommended for multiple backup/restore
execution.
To execute multiple backup/restore operations at the same time by using batch files or shell scripts, set an
interval after a mount operation or an unmount operation is complete. The recommended guideline for the
time to set as the interval after a mount operation or an unmount operation is the total number of tape drives
multiplied by 120 (in seconds). To set the interval, use the sleep operation or another operation.
In addition, perform the settings that are described in
FUJITSU Storage ETERNUS LT140 Tape Library User's Guide -Server Connection-
"4.1.5 Setting the Media Mount Timeout" (page
36
Copyright 2019 FUJITSU LIMITED
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