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Universal Volume Manager Requirements
The following table describes the Universal Volume Manager requirements.
Table 3-2
Maximum number of ports in the
connected external storage system
(WWN is used as a port identification
number）
Maximum number of external volumes
which can be connected
Maximum number of mapping paths
can be set for one external volume
Maximum capacity of an external
volume
Minimum capacity of an external
volume
Maximum number of external volume
groups
Maximum number of external volumes
which can be registered in one
external volume group
Hitachi Universal Storage Platform V/VM Universal Volume Manager User's Guide
Universal Volume Manager Requirements
Item
Preparing for Universal Volume Manager Operations
1,024 per port
63,232 volumes can be connected..
4,096 volumes can be connected per port.
Note: If you use Copy-on-Write Snapshot or Dynamic
Provisioning, the number of external volumes which can be
connected is as follows:
Number of external volumes + Number of virtual volumes ≤
63,232
8
4 TB per external volume (8,589,934,592 blocks)
If you specify an external volume which 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.
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
16,384
4,096
Requirement
3-5
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