Error while recalling or copying large numbers of archived items in Enterprise Vault (EV) for File System Archiving.

Article:TECH47861  |  Created: 2006-01-22  |  Updated: 2014-07-30  |  Article URL http://www.symantec.com/docs/TECH47861
Article Type
Technical Solution

Product(s)

Issue



Error while recalling or copying large numbers of archived items in Enterprise Vault (EV) for File System Archiving.


Error



The remote storage service was not able to recall the file.


Solution



By default, Enterprise Vault prevents large recalls from being triggered.  This functionality was introduced in EV5 SP3.  Previously, any user with access to a Placeholder could recall it. Similarly, an application such as a virus scanner that did not honor the file system offline attribute could recall all files that had been archived from a volume.

You can specify a maximum rate of recall on each computer that runs a Placeholder Service, thus controlling the rate at which an individual user can recall files. By doing this you also prevent any applications that do not honor the file system offline attribute from recalling all files that had been archived from a volume.

The default maximum rate is 20 recalls in 10 seconds. This recall limit applies to all users except, by default, members of the local Administrators group.

If the recall limit is exceeded, the application receives an Access Denied status. Just how this is displayed to the user depends on each individual application.

Modifying the following registry values on each computer running the Placeholder Service allows the defaults to be increased or decreased.
 
 
Warning: Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application. It is recommended that a complete backup of the registry and workstation be made prior to making any registry changes.

Note: For an x64 platform changes need to be made in following location: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\KVS\Enterprise Vault\FSA\PlaceholderService

RecallLimitMaxRecalls specifies the maximum number of items that a user is allowed to recall within the specified RecallLimitTimeInterval seconds. When this limit is reached, there is a additional wait of RecallLimitTimeInterval seconds before the count is reset.
 
HKEY_LOCAL_MACHINE\Software\KVS\Enterprise Vault\FSA\PlaceholderService\RecallLimitMaxRecalls
 
  • The initial value is 20.
  • The effective values range from 0-99 (decimal), settings above 99 will result in the default value of 20 being used.
HKEY_LOCAL_MACHINE\Software\KVS\Enterprise Vault\FSA\PlaceholderService\RecallLimitTimeInterval
 
  • The initial value is 10 (seconds).
  • The lowest value EV will use is 1, values of up to 60 can be used (decimal)

Note:
While there is not a way to disable the recall limit entirely, you can render it effectively impotent by setting RecallLimitTimeInterval very low. Setting it to 1 means that it will only trigger the limit if it is reached in a single second; even with RecallLimitMaxRecalls at the default 20, this is unlikely to happen (20 files recalled in one second). On a very powerful system, you could increase RecallLimitMaxRecalls to 99 to make the limit even less likely to be reached (99 files recalled inside one second). This has been successfully tested recalling 1,000 files using RecallLimitTimeInterval = 1 and RecallLimitMaxRecalls = 20 (default).

BypassRecallLimitsForAdmins controls whether the recall limits apply to members of the local Administrators group on the server that is running the Placeholder Service. Setting to 1 will allow members of local admins to recall files without restriction.

 
HKEY_LOCAL_MACHINE\Software\KVS\Enterprise Vault\FSA\PlaceholderService\BypassRecallLimitsForAdmins
 

 
0 - (Default) Recall limits apply to administrators
 
1 - There are no recall limits for administrators
 

Note: Once the registry changes are complete, restart the Enterprise Vault Placeholder Service for the changes to take effect.

 
 

 


Legacy ID



283467


Article URL http://www.symantec.com/docs/TECH47861


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