Communicator e3000 MPE/iX Release 6.5 (Non-Platform Software Release C.65.00 (30216-90291)

120 Chapter4
Data Center Management
SureStore E Disk Array XP256 Business Copy XP and/or Continuous Access XP in an HP 3000 Environment
SureStore E Disk Array XP256 Business Copy XP and/or
Continuous Access XP in an HP 3000 Environment
by Walt McCullough
Commercial Systems Division
Product Descriptions
Business Copy is an XP256 feature that allows for copy on demand of selected disk
volumes. These volumes should be grouped as User Volumes, an MPE/iX term. These
copied disks can then be split from their masters and presented to another HP 3000
machine for off-loading operations such as backup or application testing.
Business Copy volumes are managed from the internal XP256 PC or from a PC configured
as the Remote Control PC.
The software used to manage Business Copy volumes is not currently available to execute
directly from the HP 3000 but requires the separate PC to function.
Continuous Access is the feature that allows the XP256 to continuously maintain a copy
of a selected number of disk volumes on another XP256 disk cabinet, located locally or
remotely.
This feature is somewhat similar to Business Copy in that off-loading backup operations or
application testing can be performed. The added value is that the user can use this feature
to maintain a complete working set of data that could be used on the remote computer in
the event of a catastrophic site outage at the primary location.
The software used to manage Continuous Access volumes is not currently available to
execute directly from the HP 3000 but requires the separate PC to function.
Environment
Business Copy and Continuous Access is supported on MPE/iX release 5.5 with PPT07 and
patch MPEKXL9 and MPEKXT8. It is also supported on MPE/iX release 6.0 with patch
MPEKXL9 and MPEKXT8. For more information on patches and versions, please contact your
support engineer.
Basic Operation
Business Copy and Continuous Access have virtually the same procedures for setup.
System A will “own” data located on a primary user volume set. A running copy of this
data will be maintained on a Business Copy of the volume set.
At a customer defined time, the user will VSCLOSE the primary user volume set and then
split the primary user volume set from the Business Copy volume set.
After the split is complete, the user can then VSOPEN the primary user volume set onto
System A and continue operations. System B can now VSOPEN the split off Business Copy
volume set and proceed with its operations.