Operation Manual

225 Copyright © Acronis International GmbH, 2002-2015
When the number of components in this queue is equal to the value in Fast Operation Queue
Limit and another component tries to establish a connection, the storage node does not put the
component in the queue. In this case, the corresponding operation fails.
See also the Backup Queue Limit parameter.
Vault Metadata Databases Path
Description: Specifies the path to the folder where vault databases, also called metadata
databases, are stored.
Possible values: Any string 0 to 32765 characters long
Default value: Empty string
An empty string means the folder %ALLUSERSPROFILE%\Application
Data\Acronis\BackupAndRecovery\ASN\VaultMetadataDatabases (in Windows XP and Server
2003) or %PROGRAMDATA%\Acronis\BackupAndRecovery\ASN\VaultMetadataDatabases (in
Windows Vista and later versions of Windows).
A vault database contains information about archives and backups stored in the vault. When you
create or attach a vault, the storage node places the database for that vault to the folder
determined by this parameter.
Changing this parameter does not affect the currently existing vault databases. If you want these
databases to be moved to the new folder, detach (p. 178) the corresponding vaults and then
attach (p. 184) them to the same storage node.
Deduplication Databases path
Description: Specifies the path where deduplication databases are stored.
Possible values: Any string 0 to 32765 characters long
Default value: Empty string
An empty string means that the path must be entered manually.
A deduplication database contains the hash values of all data items stored in a vault—except for
those that cannot be deduplicated. When you create a deduplicating vault, the storage node
places the deduplication database for that vault to the folder determined by this parameter. For
better performance, place the database on a disk drive other than the disk drive used for storing
backups.
Changing this parameter does not affect the currently existing deduplication databases.
Check Hash Value On Server Side
Description: Specifies whether to check the hash values of data blocks that are sent to a
deduplicating vault
Possible values: Enabled or Disabled
Default value: Disabled
When sending a data block to a deduplicating vault, the agent also sends that block’s fingerprint
known as the hash value.
The Check Hash Value On Server Side parameter determines whether the storage node must
ensure that the hash value matches the data block. Such check puts an additional load on the
storage node.
Normally, such check is not necessary. You can set this parameter to Enabled to make the
deduplication process more secure.
If the check reveals a mismatch between the data block and its hash value, the backup operation
fails.
Vault Warnings and Limits