Description
Item
Select the Tier Management checkbox, then set the tier management, the cycle
time, and the monitoring period.
•
Tier Management: Select
Auto
or
Manual
.
•
Cycle Time: When selecting
Auto
in the Tier Management option, select the
cycle of performance monitoring and tier relocation from the Cycle Time list.
•
Monitoring Period: When selecting 24 Hours in the Cycle Time list, specify
the time of starting and ending of performance monitoring in 00:00 to 23:59
(default value). Take one or more hours between the starting time and the
ending time. If you specify the starting time later than the ending time, the
performance monitoring continues until the time when you specify as the
ending time on the next day.
Select the Monitoring Mode checkbox, then set the monitoring mode.
Monitoring Mode: Specify the monitoring mode. If you perform the tier relocation
weighted to the past period monitoring result, select Continuous Mode. If you
perform the tier relocation on the specified cycle, select Period Mode.
Select the Relocation Speed checkbox. Then set the tier relocation speed.
Relocation Speed: Specify the page relocation speed when tier relocation is
performed. You can set the speed to: 1(Slowest), 2(Slower), 3(Standard),
4(Faster), or 5(Fastest).
Select the Buffer Space for New page assignment checkbox, then set the buffer
space for new page assignment.
Buffer Space for New page assignment: Enter an integer value from 0 to 50 as
the percentage (%) to set for tier 1, tier 2, and tier 3. If there is no tier, you
cannot set this item.
Select the Buffer Space for Tier relocation checkbox, then set the buffer space
for tier relocation.
Buffer Space for Tier relocation: Enter an integer value from 2 to 40 as the
percentage (%) to set for tier 1, tier 2, and tier 3.
If the checkbox is not selected, you cannot set this item. You must set all items if
you change the pool setting from Thin Provisioning (or Thin Provisioning Z) to
Smart Tiers (or Smart Tiers Z).
If the checkbox is selected, you cannot collapse the Options for Smart Pool field.
Select the Subscription Limit checkbox, then enter the subscription limit (%). In
Fast Snap, you cannot change the setting of this function.
Subscription Limit
•
If this field is blank, the subscription is set to be unlimited.
•
For an open system, use blank or a value in the following range:
(Total V-VOL capacity including the control information / pool capacity) *
100(%) +1 to 65534(%)
•
For a mainframe system, use blank or a value in the following range:
(Total V-VOL capacity / pool capacity) * 100(%) +1 to 65534(%)
•
For the open system, when the current subscription setting is unlimited and
the value calculated by the following formula exceeds 65534, you cannot
configure the subscription limit.
((Total V-VOL capacity including the control information / pool capacity) *
100)
•
For the mainframe system, when the current subscription setting is unlimited
and the value calculated by the following formula exceeds 65534, you cannot
configure the subscription limit.
((Total V-VOL capacity / pool capacity) * 100)
•
If the checkbox is not selected, the subscription limit is disabled.
326 Thin Provisioning and Smart Tiers GUI reference