29.2 Monitoring Compression and Salvage Statistics

For each volume, the Volume Properties Statistics page in iManager reports statistics about the compressed and salvageable files in the volume, the GUID of the volume, and the block size being used.

  1. In iManager, click Storage > Volumes.

    For instructions, see Section 10.1.5, Accessing Roles and Tasks in iManager.

  2. Select a server to manage.

    For instructions, see Section 10.1.6, Selecting a Server to Manage.

  3. In the Volumes list, select a volume that you want manage.

  4. Click Properties.

    The Properties page has three tabs: Attributes, Statistics, and Quota Usage. It opens by default to the Attributes tab.

  5. Click the Statistics tab to view the compression and salvage statistics for the selected volume.

    Sample Statistics Page from the Volume Properties

    If the compression attribute is set, the Compression report shows statistics of all the compressed files for the selected volume.

    Statistic

    Description

    Compressed Space

    The amount of space in the volume in use by compressed files.

    Files

    The total number of files in the volume and information by the following categories:

    • Not Deleted: The total number of files in the volume that are currently available to users.

    • Deleted: The total number of files in the volume that are deleted but not yet purged from the system.

    • Uncompressed: The total number of files in the volume that are not stored in compressed form.

    If the Salvage Files attribute is enabled, the Salvage report shows statistics about deleted files that have not yet been purged.

    Statistic

    Description

    Minimum Keep Seconds

    Minimum time (in seconds) to keep deleted files.

    Maximum Keep Seconds

    Maximum time (in seconds) to keep deleted files.

    Low Water Mark

    If the amount of free space drops below this percentage, the file system begins purging deleted files.

    High Water Mark

    If there are files to delete, the autopurging process stops when the amount of free space reaches this percentage.

    Next Scheduled Purge

    Date and time of the next purge.

    Purgeable Space

    Amount of space in the volume that is occupied by deleted files that are queued for purging.

    Unpurgeable Space

    Amount of space in the volume that is occupied by files.

    Deleted Files

    The number of deleted files in salvage.

    Oldest Deleted Time

    Time line for deleted files. The file system purges the files in the same order they were deleted.

    GUID

    The Global Unique Identifier (GUID) number that NSS assigns to the volume. This number is necessary so your file system can locate the specific volume.

    Block Size

    The maximum amount of data committed to a single write process. Possible sizes include 4, 8, 16, 32, or 64 KB.

    Other information reported includes the volume’s GUID and block size.

    Statistic

    Description

    GUID

    The Global Unique Identifier (GUID) number that NSS assigns to the volume. This number is necessary so your file system can locate the specific volume.

    Block Size

    The maximum amount of data committed to a single write process. Possible sizes include 4, 8, 16, 32, or 64 KB.