Operation Manual

196 Copyright © Acronis International GmbH, 2002-2015
To relocate the database in Windows:
1. Stop the Acronis Removable Storage Management service.
2. Move all files from the default location to the new location.
3. Add the registry key described below. Specify the new location path in the registry value
ArsmDmlDbProtocol.
Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\ARSM\Settings
Registry value: ArsmDmlDbProtocol
Possible data values: Any string 0 to 32765 characters long.
Description: Specifies the folder where the tape management database is stored.
4. Start the Acronis Removable Storage Management service.
To relocate the database in Linux:
1. Stop the acronis_rsm service.
2. Move all files from the default location to the new location.
3. Open the configuration file /etc/Acronis/ARSM.config in a text editor.
4. Locate the line <value name="ArsmDmlDbProtocol" type="TString">.
5. Change the path under this line.
6. Save the file.
7. Start the acronis_rsm service.
7.4.2.4 Parameters for writing to tapes
The tape writing parameters (block size and cache size) allow you to fine-tune the software to
achieve the maximum performance. Both parameters are required for writing to tapes, but normally
you only need to adjust the block size. The optimal value depends on the tape device type and on the
data being backed up, such as the number of files and their size.
Note When the software reads from a tape, it uses the same block size that was used when writing to the tape.
If the tape device does not support this block size, the reading will fail.
The parameters are set on each machine that has a tape device attached. It can be a machine where
an agent or a storage node is installed. On a machine running Windows, the configuration is
performed in the registry; on a Linux machine, it is done in the configuration file
/etc/Acronis/BackupAndRecovery.config.
In Windows, create the respective registry keys and their DWORD values. In Linux, add the following
text at the end of the configuration file, right before the </registry> tag:
<key name="TapeLocation">
<value name="WriteCacheSize" type="Dword">
"value"
</value>
<value name=DefaultBlockSize" type="Dword">
"value"
</value>
</key>
DefaultBlockSize
This is the block size (in bytes) used when writing to tapes.
Possible values: 0, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072,
262144, 524288, 1048576.