Chapter 4 Connectivity Management
4.1 Host Affinity Management
ETERNUS Web GUI User’s Guide (Settings)
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7 Select a LUN group to configure a host affinity, and click the [OK] button.
The display returns to the initial screen.
The LUN range that can be recognized from a host depends on the "LUN Addressing" and "LUN Expand
Mode (Peripheral Device Addressing)" settings of the host response that is applied to the selected
"Host Group" (specific host group) or "All" (all of the hosts). Refer to "Host responses and recognizable
LUNs" (page 818) for details. LUN groups that use LUNs from LUN#256 onward cannot configure the
host affinity with a host group for which the recognizable LUNs is "256 LUN" host response. When "All"
is selected, the host affinity setting cannot be configured with LUN groups that use LUNs from
LUN#256 onward.
• When "All" is selected for "Host Group", the LUN groups in which LUNs are specified from LUN#512
onward are not displayed.
• LUN groups including volumes that are used for the Storage Cluster function are not displayed.
Host response Recognizable
LUNs
LUN range that can be recognized from
a host
LUN
Addressing
LUN Expand Mode
(Peripheral Device
Addressing)
When "Host
Group" is selected
When "All" is
selected
PRHL Disable (Default) 256 LUNs LUN#0 -
LUN#255
LUN#0 -
LUN#255
PRHL Enable 4096 LUNs LUN#0 -
LUN#4095
LUN#0 -
LUN#511
FLAT Disable (Default)
Enable
4096 LUNs UN#0 -
LUN#4095
LUN#0 -
LUN#511
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