IBM Storwize V5010 Manual page 184

The threshold can be modified by selecting Modify Threshold and entering the new value,
as shown in Figure 4-27. The default threshold is 80%. Warnings can be disabled by setting
the threshold to 0%.
Figure 4-27 Modifying pool threshold
Add storage
Selecting Add Storage starts the wizard to assign storage to the pool. For a detailed
description of this wizard, see 4.3.1, "Assigning managed disks to storage pools" on
page 172.
Edit Throttle
You can create, modify, and remove throttles for pools by using the management GUI or the
command-line interface.
are used when the system is processing I/Os on a specific pool. If a throttle is defined, the
system either processes the I/O, or delays the processing of the I/O to free resources for
more critical I/O.
There are two parameters that can be defined through the Edit Throttle option:
Bandwidth limit defines the maximum amount of bandwidth the pool can process before
the system delays I/O processing for this pool.
IOPS limit defines the maximum I/O operations per second the pool can process before
the system delays I/O processing for this pool
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Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1
Throttling
is a mechanism to control the amount of resources that