Operation Manual

225 Copyright © Acronis International GmbH, 2002-2015
Vaults
This tab displays a list of vaults managed by the selected storage node. To update the list of vaults
with the most recent information from the management server, click Refresh.
Indexing
This tab lets you examine the current status of indexing for the deduplicating vaults of the storage
node and review the date and time of the last run.
7.5.6.4 Configuring a storage node by using Acronis Administrative
Template
The following are the parameters of Acronis Backup Storage Node that can be set by using Acronis
Administrative Template. For information on how to apply the administrative template, see How to
load Acronis Administrative Template (p. 400).
Parameters related to compacting
As backups are deleted from a deduplicating vault, its deduplication data store (p. 232) may contain
unused data blocks (items) that are no longer referred to from any backup. The storage node
processes the data store to delete the unused items. This operation is called compacting. Compacting
is performed by the compacting task.
Every time the compacting task starts, the storage node determines whether to perform compacting.
To do this, the storage node:
1. Checks the size of the backed-up data that has been deleted from the vault since the last
compacting.
2. Uses the Compacting Trigger Rough Estimation Threshold parameter to determine whether this
size, relative to the size of the remaining backed up data, is significant.
3. If so, uses the Compacting Trigger Threshold parameter to determine whether the deduplication
data store contains a significant number of unused items. If so, the storage node performs
compacting.
The parameters are the following.
Compacting Trigger Rough Estimation Threshold
Description: Specifies the relative size of the backed-up data that remains in a deduplicating vault,
below which checking for unused items is performed (see the Compacting Trigger Threshold
parameter).
Possible values: Any integer number between 0 and 100
Default value: 90
The Compacting Trigger Rough Estimation Threshold parameter enables you to skip the check
for unused items (and hence skip compacting) when the content of the vault did not change
significantly.
The larger the value of this parameter, the more often the check for unused items will be
performed. The value 100 means that the check will be performed each time the compacting
task starts.
How it works. Assume that the parameter value is 90 and the vault has 100 GB of backed up data.
It does not matter whether this data has duplicates. Then, you delete a few backups and the
backed-up data size becomes equal to 80 GB. In this case: