Hitachi HUS VM, Руководство пользователя и справочник

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For details, see Configuring Server Priority Manager by specifying LDEVs
and WWNs or iSCSI names of HBAs on page 5-66 .
Note: The WWN of a host bus adapter connected to a port is required when
specifying the port with CCI and setting SPM. Since the WWN of an HBA
connected to a NAS Platform port cannot be obtained, the SPM setting with
specifying these port types is not available.
Configuring Server Priority Manager by specifying ports and WWNs
of HBAs
This section describes operations for configuring Server Priority Manager by
specifying a port and a WWN of a host bus adapter.
• Controlling the priority of I/O operations in storage systems on servers on
page 5-56
• Using and managing Server Priority Manager on page 5-57
• Setting SPM names for WWNs and registering them to the SPM group on
page 5-58
• Configuring Server Priority Manager by specifying ports and WWNs of
HBAs on page 5-58
• Cautions about using Server Priority Manager on page 5-63
• Cautions when using host groups after registering them in SPM groups
(VSP only) on page 5-65
Controlling the priority of I/O operations in storage systems on servers
To control server performance, specify the I/O operation priority (prioritized
or non-prioritized), the threshold (one value for each storage system), and
the upper limit (one value for each non-prioritized WWN) for host bus
adapters on a host. Set a host bus adapter with higher priority as a prioritized
WWN, and set a host bus adapter with lower priority as a non-prioritized
WWN. By adjusting the upper limit or threshold to an appropriate value, you
can maintain the number of accesses or the amount of data to be transferred
to a storage system at a higher level on a prioritized server.
Table 5-3 Priority to be set by specifying a port and a WWN of an HBA, and
control of server performance
Priority Server performance
Non-prioritized Controls server performance based on the upper limit. The upper limit
is set for each non-prioritized WWN.
The upper limit suppresses the number of accesses to a storage
system, or the amount of data to be transferred. Monitoring
information can be displayed according to the combination of a port
and a WWN of a host bus adapter.
Prioritized Controls server performance based on the threshold. One threshold is
set for each storage system, but it cannot be set for each prioritized
WWN.
5-56
Provisioning operations with CCI
Command Control Interface User and Reference Guide