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IBM Tivoli Storage Manager for Windows Backup-Archive Clients ...

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Options File<br />

Place this option in the client options file (dsm.opt). You can set this option on the<br />

Scheduler tab, Maximum command retries field of the Preferences editor.<br />

Syntax<br />

►► MAXCMDRetries maxcmdretries ►◄<br />

Parameters<br />

maxcmdretries<br />

Specifies the number of times the client scheduler can attempt to process a<br />

scheduled command that fails. The range of values is zero through 9999; the<br />

default is 2.<br />

Examples<br />

Options file:<br />

maxcmdr 4<br />

Command line:<br />

-maxcmdretries=4<br />

This option is valid only on the initial command line. It is not valid in interactive<br />

mode.<br />

Memoryefficientbackup<br />

The memoryefficientbackup option specifies the memory-conserving algorithm to<br />

use <strong>for</strong> processing full file space backups.<br />

One method backs up one directory at a time, using less memory. The other<br />

method uses much less memory, but requires more disk space.<br />

Use the memoryefficientbackup option with the incremental command when your<br />

workstation is memory constrained. You can also use this option as a parameter to<br />

the include.fs option in order to select the algorithm <strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> uses<br />

on a per-filespace basis.<br />

Use memoryefficientbackup=diskcachemethod <strong>for</strong> any file space that has too many<br />

files <strong>for</strong> <strong>Tivoli</strong> <strong>Storage</strong> <strong>Manager</strong> to complete the incremental backup with either the<br />

default setting, memoryefficientbackup=no, or with memoryefficientbackup=yes.<br />

The disk cache file created by the initial disk cache incremental backup can require<br />

up to 5 gigabytes of disk space <strong>for</strong> each million files or directories being backed<br />

up.<br />

The actual amount of disk space required <strong>for</strong> the disk cache file created by disk<br />

cache incremental backups depends on the number of files and directories included<br />

in the backup and on the average path length of the files and directories to be<br />

backed up. Estimate 2 bytes per character in the path name. For example, if there<br />

are 1 000 000 files and directories to be backed up and the average path length is<br />

200 characters, then the database occupies approximately 400 MB. Another way to<br />

estimate <strong>for</strong> planning purposes is to multiply the number of files and directories<br />

by the length of the longest path to establish a maximum database size.<br />

Chapter 12. Processing options 411

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