Hitachi Universal Storage Platform VM User Manual
Page 57
Functional and Operational Characteristics
3-13
Hitachi Universal Storage Platform V/VM User and Reference Guide
Mode
Category
Function
Default
MCU/RCU
308
TrueCopy for z/OS,
Universal
Replicator for z/OS
SIM reference code (RC) = 2180 option. SIM RC=2180 (RIO
path failure between MCU and RCU) was not reported to host.
The storage system reports SSB with F/M = F5 instead of
reporting SIM RC=2180 in the case. Micro-program has been
modified to report SIM RC=2180 with newly assigned system
option mode as individual function for specific applications.
Mode 308 = ON: SIM RC 2180 is reported, which is
compatible with older Hitachi specification.
Mode 308 = OFF: Reporting is compatible with IBM - Sense
Status report of F5.
OFF MCU
316
OPEN
Auto Negotiation in fixed speed.
If signal synchronizing has been unmatched for 2.6 seconds
during Auto Negotiation, the fixed speed can be set as
follows:
Mode 316 = ON: 1 Gbps
Mode 316 = OFF (default): 2 Gbps
The mode should be set when a fixed speed of Auto
Negotiation is needed though the transfer speed may slow
down.
The mode is available for CHT PCB.
OFF –
346 OPEN
If an HBA containing HP WWN is being connected, the LUN
Security function is operational by setting system option mode
346.
Mode 346 ON: LUN Security is operational without host mode
setting restriction.
Mode 346 OFF: LUN Security is operational only when host
mode 03 is set to ON.
Note: For a new storage system, system option mode 346 ON
can be set as the default setting.
For an existing storage system, do not set this mode to ON in
this HBA configuration unless the following procedure has
been performed:
1. Shut down the server.
2. Set mode 346 to ON.
3. Power on the server.
4. Verify proper operation.
OFF –
448
Universal
Replicator
Universal
Replicator for z/OS
Mode 448 = ON: (Enabled) If the SVP detects a blocked path,
the SVP assumes that an error occurred and immediately
splits (suspends) the mirror.
Mode 448 = OFF: (Disabled) If the SVP detects a blocked path
and the path does not recover within the specified period of
time, the SVP assumes that an error occurred and splits
(suspends) the mirror.
Note: The mode 448 setting takes effect only when mode 449
is set to OFF.
OFF –
449
Universal
Replicator
Universal
Replicator for z/OS
Detecting and monitoring path blockade between MCU and
RCU of UR/URz.
Mode 449 = ON: Detecting and monitoring of path blockade
will NOT be performed.
Mode 449 = OFF: Detecting and monitoring of the path
blockade will be performed.
OFF –