HP P9000, Справочное руководство

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Table 56 Contents of the Copy Group Attributes Panel (continued)
When effective Copy type Description Item
•
When the
YKMAKE
command is executed
•
When the
YKRESYNC
command is
executed.
7
CAA Specify the sidefile flow restriction
(required for TCA).
•
Y
: Restricts the flow of host
update I/O on the S-VOL
depending on the usage amount
of the sidefiles. Deterioration of
the host’s I/O performance is
proportional to the usage
amount of the sidefiles.
•
N
: Do not restrict the flow of host
update I/O on the S-VOL. This
prevents host I/O performance
deterioration on crucial volumes.
If the usage amount exceeds the
criteria, the copy pair status
becomes SUSPCU
NOTE: If the C/T Group option
Inflow Control is not enabled in the
following models, FLOW CTL will be
disregarded even if set to
Y
:
•
XP12000/XP10000 Disk Array
•
XP24000/XP20000 Disk Array
For details, see the one of the
following documents:
•
HP StorageWorks P9000
Continuous Access Synchronous
for Mainframe Systems User
Guide
•
HP StorageWorks P9000
Continuous Access Synchronous
User Guide
•
Hitachi TrueCopy for Mainframe
User Guide: HP XP24000 Disk
Array, HP XP20000 Disk Array
FLOW CTL
82 ISPF Panels