System Discovery and Archive Analyzer for File Systems - Advanced

Table of Contents

Collect File Access Time

If you want to collect the last access time for files on Windows Operating systems, you must configure a registry key.

ReFs File System

The file access time update is disabled by default on Microsoft Windows Vista and later. In order for the file access time to be updated, verify that the RefsDisableLastAccessUpdate key is added to the Microsoft Registry Editor using the following steps.

  1. Log into the computer on which you want to add the registry key.
  2. From the Start menu, type Run.
  3. Type Regedit in the Run dialog box.
  4. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem.
  5. Right-click, and then click New | DWORD (32-bit) value.
  6. Type the name, RefsDisableLastAccessUpdate.
  7. Type 0 to enable the key.

    Type a number higher than zero to disable the key.

  8. If you disable the key, restart your computer.

For more information, refer to http://msdn.microsoft.com/en-us/library/ff469400.aspx

New Technology File System (NTFS)

By default, Windows 2008 disables the last accessed time attribute on NTFS.

This attribute can be re-enabled by using NtfsDisableLastAccessUpdate registry key. For more information, see http://technet.microsoft.com/en-us/library/cc959914.aspx.

Removing the NFS Mount Scanning Restriction

You can remove the restriction for scanning NFS Mounts on all UNIX operating systems by configuring the following registry key.

Before You Begin

Create the following directory if it does not already exist:

/etc/CommVaultRegistry/Galaxy/Instance001/FileSystemAgent

Procedure

  1. Go to the following directory:

    /etc/CommVaultRegistry/Galaxy/Instance001/FileSystemAgent

  2. Create a file named .properties.
  3. In the .properties file, type the following line:

    ignoreFStype :nfs3:nfs4:iso9660:isofs:openpromfs:smbfs:devfs:procfs:nsspool:sysfs:floppy:lofs:tmpfs:proc:ctfs:ufs:devpts:udf:cifs:

  4. Save the .properties file.
  5. After the System Discovery and Archive Analyzer for File Systems scan is complete, delete the registry key.

Allowing Scanning for Linux OES NSS FS

You can scan Linux OES NSS FS operating systems by configuring the following registry key.

Before You Begin

Create the following directory if it does not already exist:

/etc/CommVaultRegistry/Galaxy/Instance001/FileSystemAgent

Procedure

  1. Go to the following directory:

    /etc/CommVaultRegistry/Galaxy/Instance001/FileSystemAgent

  2. Create a file named .properties.
  3. In the .properties file, type the following line:

    ignoreFStype :nfs:nfs3:nfs4:iso9660:isofs:openpromfs:smbfs:devfs:drocfs:sysfs:floppy:lofs:tmpfs:proc:ctfs:ufs:devpts:udf:cifs:

  4. Save the .properties file.
  5. After the System Discovery and Archive Analyzer for File Systems scan is complete, delete the registry key.

Allowing Scanning for Skipped Files

You can allow scanning for skipped file systems on all UNIX operating systems by configuring the following registry key on each UNIX server that you will scan.

Before You Begin

Create the following directory if it does not already exist:

/etc/CommVaultRegistry/Galaxy/Instance001/FileSystemAgent

Procedure

  1. Go to the following directory:

    /etc/CommVaultRegistry/Galaxy/Instance001/FileSystemAgent

  2. Create a file named .properties.
  3. In the .properties file, type the following line:

    sSTUB_PRUNE_EXCEPTIONS /filesystem/**

    Where filesystem stands for the skipped file system that you want to scan.

    For example:

    sSTUB_PRUNE_EXCEPTIONS /usr/** /var/**

  4. Save the .properties file.
  5. After the System Discovery and Archive Analyzer for File Systems scan is complete, delete the registry key.

Increasing the Timeout for System Discovery and Archive Analyzer Jobs

By default, System Discovery and Archive Analyzer jobs time out within 12 hours. If the amount of data that you are collecting is so large that the job times out before all of the data is collected, you can create a registry key to increase the default timeout period.

  1. Log on to the computer where you run the System Discovery and Archive Analyzer.
  2. From the Start menu, type Run.
  3. Type Regedit in the Run dialog box.
  4. Go to HKEY_LOCAL_MACHINE\SOFTWARE\CommVault Systems\CVSysDiscovery.
  5. Right-click, and then click New > DWORD (32-bit) value.
  6. Type the name, RemoteProcessWaitTimeout.
  7. Type the number of seconds for the timeout period.

    For example, if you want the job to timeout after 24 hours, type 86400.

  8. Run the System Discovery and Archive Analyzer again.

Setting the Location for Temporary System Discovery and Archive Analyzer Files

By default, the System Discovery and Archive Analyzer creates temporary files in the C:\WINDOWS\Temp folder on each scanned server and then copies those temporary files to the server where the tool is running. The temporary files are deleted from each scanned server when the discovery job completes. However, if you have limited space on the C: drive of a server that you will scan, you can change the location where the temporary files are saved.

  1. On each server that will be scanned, create a folder on a drive where there is enough space.

    For example, G:\SystemDiscovery.

  2. Create a share for the folder you created and name the share SystemDiscoveryTool$.
  3. In the SystemDiscoveryTool$ share Properties dialog box, on the Security tab, assign Full Control to all users .
  4. Run the System Discovery and Archive Analyzer.