VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

Storage Selection Rules
122 VERITAS Storage Foundation ISP Administrator’s Guide
Storage Selection Rules
The following sections describe storage selection rules:
◆ affinity
◆ confineto
◆ exclude
◆ multipath
◆ select
◆ separateby
◆ strong separateby
See “Compound Rules” on page 131 for details of how to limit the scope of interpretation of rules
to the components of an application volume, such as its plexes, columns and logs.
Multiple arguments to the confineto, exclude and select storage selection rules can be
combined using the operators listed in “Storage Selection Rule Operators” on page 128. If an
operator is not specified, ISP uses the default operator for the rule.
Note The =, !=, <, <=, > and >= comparative operators can be used with the confineto,
exclude and select storage selection rules. However, the operand arguments to the <,
<=, > and >= operators must be signed or unsigned integers that are capable of being
represented by 64 or fewer bits. If the operands are character strings, real numbers, or are
integers longer than 64 bits, the result of the comparison may be incorrect.
affinity
An affinity rule expresses attraction between VxVM objects. Objects that conform to this rule
share as many attribute values as possible.
Note The affinity rule does not take any rule operators.
The following example demonstrates the application of affinity rules:
◆ Allocate storage from as few enclosures as possible:
desired affinity "Enclosure"