VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

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Changing the Allocation Behavior of ISP
B
The behavior that ISP exhibits when allocating storage can be controlled by setting the value of the
allocation_priority_order attribute. For example, this attribute determines if growing
the storage pool is preferred to dropping the desired rules when there is insufficient storage to
create a volume. The default behavior can be changed by editing the definition of the attribute in
the /etc/default/allocator file, or, for a single invocation of the vxvoladm command,
by specifying the -o allocation_priority=value option as a command-line argument.
The value argument can take an integer value from 1 to 12, as shown in the following table:
Value Precedence Order
1 S < T < A < D
2 S < T < D < A
3 S < A < T < D
4 S < D < T < A
5 S < A < D < T
6 S < D < A < T
7 A < S < T < D (default behavior)
8 D < S < T < A
9 A < S < D < T
10 D < S < A < T
11 A < D < S < T
12 D < A < S < T