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3-14 Functional and Operational Characteristics
Hitachi Universal Storage Platform V/VM User and Reference Guide
Mode Category Function Default MCU/RCU
471 Common
SIMs that require action only by the user and not maintenance
personnel are displayed on the Information of SVP and Storage
Navigator and are not reported to maintenance personnel. This
mode is provided for sites where it is required to report all SIMs
to maintenance personnel.
Mode 471 = ON: Report SIMs to maintenance personnel.
Mode 471 = OFF: Not report SIMs to maintenance personnel.
OFF –
474
Universal
Replicator for z/OS
Reduce UR for z/OS initial copy time for better performance by
using the TC for z/OS initial copy operation.
Mode 474 = ON: For a suspended URz pair, a dedicated script
can be used to create a TC z pair on the same P-VOL and
S-VOL as the URz pair to shorten the initial copy time.
Mode 474 = OFF: For a suspended URz pair, a dedicated script
cannot be used to create a TC for z/OS pair on the same P-VOL
and S-VOL of the UR for z/OS pair to shorten the UR for z/OS
initial copy time.
OFF MCU/RCU
481 OPEN
Display the detail of Identifier Type=1 of Inquiry P83 (for
Windows Vista).
Mode 481 = ON: Not display the detail of Identifier Type=1 of
Inquiry Page 83.
Mode 481 = OFF: Display the detail of Identifier Type=1 of
Inquiry Page 83.
Note: System option mode 312 must be OFF to use this mode.
OFF –
484 TrueCopy for z/OS
Display the information of PPRC path QUERY in FC interface
format. Previously, the PPRC path QUERY information was only
displayed in ESCON interface format even when the path was
FC link. When IBM host functions (e.g., PPRC, GDPS) are being
used, mode 484 can be enabled to display the PPRC path
QUERY information in FC interface format.
Mode 484 = ON: Display information of PPRC path QUERY in FC
interface format.
Mode 484 = OFF: Display information of PPRC path QUERY in
ESCON interface format.
OFF MCU/RCU
491 ShadowImage
ShadowImage for
z/OS
FlashCopy V1
Improve the performance of ShadowImage, ShadowImage for
z/OS, and FlashCopy version 1.
Mode 491 = ON: The option (Reserve 05) of SI/SIz is available.
When this option is set to ON, copy operations (SI, SIz, FCv1)
are increased from 64 processes to 128 processes for improved
performance.
Mode 491 = OFF: The option (Reserve 05) of SI/SIz is not
available. The copy operations (SI, SIz, FCv1) are performed
with 64 processes.
Notes:
Mode 491 requires at least three BED features. If there are
less than three BED features, mode 491 is not effective.
Enable mode 491 when the performance of ShadowImage,
ShadowImage for z/OS, and/or is considered to be
important.
Do not enable mode 491 when host I/O performance is
considered to be important.
When mode 491 is ON, set mode 467 to OFF. If mode 467 is
ON, the performance may not improve.
OFF –