3PAR VSS Provider 2.1.0 for Microsoft Windows User's Guide (QL226-96144, August 2011)

◦ No writers are allowed in creating the shadow copy.
◦ The shadow copy is currently not exposed to the requestor.
◦ A copy-on-write mechanism is used to implement shadow copies.
The following shadow copy attributes are not supported in the current release of 3PAR VSS
Provider for Microsoft Windows:
◦ All shadow copies are created with a copy-on-write mechanism.
◦ All shadow copies are hidden.
• Taking a snapshot on a System Drive is not supported.
With the additional System Writer involved on the System Drive, taking snapshots on a
database where its physical location is on the System Drive is not supported.
• Volume-wide snapshot.
A virtual copy is taken of the entire volume. Data outside the backup scope that might reside
on the same snapshot LUNs is not restorable from the virtual copy.
• Same snapshot set containing VVs from different sytems is not supported.
VSS Provider can not support volumes from different systems to be processed within the same
snapshot set.
• Importing snapshots created on Windows 2003 to 2008 and vice versa is not supported.
This is a Microsoft VSS limitation.
• All snapshots imported through VSS will be exposed via host name only. Export on a specific
port and matched set is not supported.
• All snapshots imported through VSS will be exposed to the first available host name registered
in the same HP 3PAR Storage System that belongs to the current Windows system.
Special Considerations 9