HP XP Racks - Manual (Page 7)

RWC communicates with the XP7’s service processor (SVP) over defined TCP/IP connections.RWC
is LAN-attached to XP7.
For more information about using RWC, see the HP XP7 Remote Web Console User Guide.
RAID Manager
RAID Manager is a tool that uses the command line interface to run commands that perform most
of the same tasks you can do with the RWC. You run pair commands directly from the host or
automate commands using scripts.
For more information about using RAID Manager, see the HP XP7 RAID Manager User Guide.
Consistency groups
Use a consistency group (CG) to perform tasks on the BC pairs in the group at the same time,
including consistency group pair-split tasks. Using a CG to perform tasks ensures the consistency
of the pair status for all pairs in the group.
Related topics
•
“Supported Business Copy consistency group user tasks and options” (page 87) .
•
“Business Copy system requirements” (page 11) .
Volume pairs
A volume pair consists of a P-VOL and an S-VOL. You can pair a P-VOL with a maximum of three
layer-1 (L1) pair S-VOLs.
Because S-VOLs are updated asynchronously, the P-VOL and S-VOLs may not be identical. Splitting
or deleting a pair allows the host access to the S-VOL.
Related topics
•
“BC pair creation” (page 34) .
•
“Splitting BC pairs” (page 45) .
•
“BC pair resynchronization” (page 51) .
•
“BC pair deletion” (page 58) .
Cascaded pairs
Cascaded pairs are volume pairs created in the first and second layer. A pair that is made up of
an L1 S-VOL and a layer-2 (L2) S-VOL is referred to as an L2 pair. You can pair each BC L1 S-VOL
with two L2 S-VOLs. You can pair a maximum of nine L1 and L2 S-VOLs combined with a P-VOL.
The following image shows the structure of cascaded pairs.
Volume pairs 7