HP XP External Storage Software - Manual (Page 38)

Table 1 XP External Storage Requirements
Requirement Item
1,024 per port Maximum number of ports in the
connected external storage system
(WWN is used as a port identification
number
63,232 volumes can be connected.
4,096 volumes can be connected per port.
If you use XP Snapshot or XP Thin Provisioning, the number of
external volumes that can be connected is as follows:
Number of external volumes + Number of virtual volumes
63,232
Maximum number of external volumes
that can be connected
8 Maximum number of mapping paths can
be set for one external volume
4 TB per external volume
If you specify an external volume that is more than 4 TB you can
access the data stored in the field up to 4 TB. You cannot access
the data that is stored in the field over 4 TB.
Maximum capacity of an external volume
77,760 blocks (about 38 MB) per external volume.
However, when the emulation type of the volume is OPEN-V,
the minimum capacity becomes 96,000 blocks (about 47 MB)
per external volume
Minimum capacity of an external volume
16,384 Maximum number of external volume
groups
4,096 Maximum number of external volumes
that can be registered in one external
volume group
Guidelines for XP External Storage Operations
This section provides guidelines for the XP External Storage operations.
Mapping Guidelines
•
Before mapping external volumes, make sure that external volumes are not reserved by a host.
External volumes that are reserved by a host cannot be mapped as internal volumes.
If external volumes are reserved by a host, cancel the reserve settings and then map the external
volumes.
•
Once external volumes are mapped, do not reserve the external volumes for a host.
If external volumes are reserved by a host, internal volumes to which the external volumes are
mapped will be blocked.
38 Preparing for XP External Storage Operations