Vault Cache Content Cache synchronization takes a long time to complete
Article ID: 100023477
Updated On:
Cause
Enterprise Vault (EV) Vault Cache (VC) content cache synchronization initially builds temporary PST files with a .DB extension on the EV server. When the build is complete, the EV Client begins a Microsoft Bits download job to retrieve the files from the EV server.
Current Vault Cache builds can be viewed by accessing the EV server url:
http(s)://EV_SERVER_NAME/enterprisevault/VCView.aspx
If the Microsoft BITS throttling Group policy is enabled and set to a low level, the download can take an extended period of time to complete or not download any .DB files.
To check if Microsoft BITS throttling is enabled follow the steps below:
- Open Group Policy by entering gpedit.msc /gpcomputer:"ComputerName" in the Run window or at the command prompt in a CMD window.
- BITS policies are located under Computer Configuration, Administrative Templates, Network, Background Intelligent Transfer Service.
- Right-click the policy and select Edit.
The group policies for BITS are located in the registry at HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\BITS. Note that only those policies that are configured are listed in the registry.
BITS uses the following Group Policies to configure bandwidth throttling.
| Policy | Description |
|---|---|
| EnableMaintenanceLimits BITS 4.0 |
Limits the network bandwidth that BITS uses for background transfers during the maintenance days and hours. Maintenance schedules further limit the network bandwidth that is used for background transfers. Specify a limit to use for background jobs during a maintenance schedule. For example, if normal priority jobs are currently limited to 256 Kbps on a work schedule, you can further limit the network bandwidth of normal priority jobs to 0 Kbps from 8:00 A.M. to 10:00 A.M. on a maintenance schedule. Note: the bandwidth limits that are set for the maintenance period supersede any limits defined for work and other schedules. |
| EnableBandwidthLimits BITS 4.0 |
Limits the network bandwidth that BITS uses for background transfers during the work and non-work days and hours. The work schedule is defined using a weekly calendar, which consists of days of the week and hours of the day. All hours and days that are not defined in a work schedule are considered non-work hours. |
For additional Group Policy settings related to BITS, please refer to Microsoft's site.
Resolution
Have the network administrator adjust the Microsoft BITS throttling Group Policy to a level that synchronization does not take an extended period of time
Issue/Introduction
