Host Response; Figure 71 Host Response - Fujitsu ETERNUS DX100 S4 Design Manual

3. SAN Functions
Stable Operation via Load Control

Host Response

The response from the ETERNUS DX can be optimized by switching the setup information of the
host response for each connected server.
The server requirements of the supported functions, LUN addressing, and the method for com-
mand responses vary depending on the connection environments such as the server OS and the
driver that will be used. A function that handles differences in server requirements is supported.
This function can specify the appropriate operation mode for the connection environment and
convert host responses that respond to the server in the ETERNUS DX.
The host response settings can be specified for the server or the port to which the server connects.
For details on the settings, refer to "Configuration Guide -Server Connection-".

Figure 71 Host Response

Server A
Host Response settings
for for
Server A Server B
If the host response settings are not set correctly, a volume may not be recognized or the de-
•
sired performance may not be possible. Make sure to select appropriate host response set-
tings.
The number of LUNs that can be referenced from the host varies depending on "LUN Address-
•
ing" and "LUN Expand Mode (Peripheral Device Addressing)" of the host response settings.
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
Server C
Server B
ETERNUS DX
for
Server C
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