HP 3PAR Application Software Suite for Microsoft Exchange - Manual (Page 20)

2.6 How VSS Works with Exchange
3PAR Recovery Manager 4.1.0 For Microsoft Exchange 2010 User’s Guide
2.5 How VSS Works with Exchange
1 The requestor (Recovery Manager) sends a command to the Volume Shadow Copy service
to take a shadow copy of the selected Mailbox Database.
2 The Volume Shadow Copy service communicates with the Exchange writer or Public Folder
Database to flush the current log file generation to disk and suspend any writes to the log
files and to the .edb file. The .stm file will not be allowed to grow, however read-only
access is still allowed. So anything that is already there can still be accessed from the client.
3 Volume Shadow Copy service communicates with the provider to initiate the shadow copy
process for the disk volumes that contain Exchange data. VSS talks to the writers and
providers to fix a point in time for the shadow copy to take place; it is the provider that
actually does the shadow copy.
4 The shadow copy typically takes less than a minute. Clients that use Microsoft Outlook in
cached mode will not notice any disruption. Clients of earlier versions of Outlook may see
hourglass icon for several moments during the shadow copy process.
5 When the shadow copy has been taken, Volume Shadow Copy service communicates with
the Exchange writer to let it know that it can resume writing to disk.
6 The queues of e-mail transactions are written to the logs.
7 The shadow copy is now available to the requestor for backing up.
2.6 Supported VSS Components
VSS components currently supported by 3PAR Provider for Microsoft VSS include:
■ Requestor
◆ Recovery Manager
◆ Symantec NetBackup
TM
by Symantec for Windows
■ Writer - Microsoft Exchange 2010
NOTE: For Symantec NetBackup supported version and Microsoft Mailbox Server
specific release levels, refer to the latest InForm OS Configuration Matrix, which
can be accessed through the 3PAR Document Control System (DCS).