External storage requirements, Guidelines for external storage operations, Mapping guidelines – HP XP P9500 Storage User Manual
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Supported external storage systems are listed on the HP Single Point of Connectivity Knowledge
(SPOCK) website:
.
External Storage requirements
The following table describes the External Storage requirements.
Table 1 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.
Maximum number of external volumes that can be
connected
4,096 volumes can be connected per port.
If you use Snapshot or Thin Provisioning, the number of external
volumes that can be connected is as follows:
Number of external volumes + Number of virtual volumes ≤
63,232
8
Maximum number of mapping paths can be set for
one external volume
59.99 TB per external volume (128,849,011,200 blocks)
Maximum capacity of an external volume
If you specify an external volume that is more than 59.99 TB you
can access the data stored in the volume up to 59.99 TB. You
cannot access the data that is stored in the volume over 59.99
TB.
77,760 blocks (about 38 MB) per external volume. However,
when the emulation type of the volume is OPEN-V, the minimum
Minimum capacity of an external volume
capacity becomes 96,000 blocks (about 47 MB) per 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 External Storage operations
This section describes the guidelines for 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 virtual 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 virtual volumes to which the external volumes are
mapped will be blocked.
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Prerequisites