HP XP Command View Advanced Edition Software - Manual (Page 35)

Preparing for and Starting Operations 35
Table 4-1 Requirements for a logical device to be selectable as a primary volume (SP-volume)
Storage subsystem Requirements for a logical device to be selectable as a primary volume (SP-volume)
Conditions for
Business Copy XP
• The logical device must not be the secondary volume for a
Business Copy XP SP-volume.
• If the selected logical device is a Business Copy XP primary
volume, the number of secondary volumes must be less than 3.
• If the selected logical device is a Business Copy XP SP-volume, the
number of secondary volumes must be less than 2.
• The logical device must not be a primary volume, V-volume or data
pool for Snapshot XP.
StorageWorks
XP1024/XP128 and
StorageWorks
XP512/XP48 Conditions for
Continuous Access
XP • The logical device must not be a primary or secondary volume for
Continuous Access XP.
• The logical device must belong to the CU (MCU) for which the RCU
is set up.
Conditions for
Business Copy XP
• The logical device must not be the secondary volume for a
Business Copy XP SP-volume.
• If the selected logical device is a Business Copy XP primary
volume, the number of secondary volumes must be less than 3.
• If the selected logical device is a Business Copy XP SP-volume, the
number of secondary volumes must be less than 2.
* If you want to use a Business Copy XP S-VOL as the P-VOL for a Continuous Access XP copy pair, the status of the
Business Copy XP copy pair must be Split.
4-3-2 S-VOL Requirements
Requirements for a logical device to be selectable as a secondary volume for a copy pair differ depending on
the storage subsystem or copy type.
Table 4-2 shows the requirements for a logical device to be selectable as
a secondary volume.
Table 4-2 Requirements for a logical device to be selectable as a secondary volume
Storage subsystem Requirements for a logical device to be selectable as a secondary volume
Common to all storage
subsystems Common conditions
for paired volumes • The logical device must be identifiable to the Device Manager
agent, and must not be mounted. You can confirm this by checking
whether the date is updated to the last update time. However, if the
host uses the central management method for pair management,
the Device Manager agent does not need to identify the logical
device.
• The combination of the RAID levels must satisfy the conditions
shown in
Table 4-3 .
• The logical device must not be a command device.
• The LUN security must be set up for the selected host.
• The logical device must not be selected as a primary volume.
• The logical device must have the same capacity as that of the
primary volume.
• The logical device must not be mounted as a file system.
• If the central management method is used for pair management,
the logical device must be a volume that belongs to the storage
subsystem for the command device identified by the host that
manages the copy pairs.
• The logical device must not be a primary volume or secondary
volume for Continuous Access XP, or Business Copy XP. *
Condition for
Business Copy XP
The logical device must be in the same storage subsystem as the
selected primary volume.