VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

Chapter 8, Using Capabilities, Templates and Rules
Compound Rules
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◆ Use confineto rules to force a column to be created on separate enclosures, but which are
attached to the same controller, ctlr1:
stripe 6-2 {
confineto "Controller"="ctlr1"
separateby "Enclosure"
}
Six columns are created by preference. If this is not possible, ISP attempts to create fewer
columns down to a minimum of two.
log
The log rule describes a volume’s logs. The argument of the rule specifies how many mirrors the
log should have. Compound rules can include storage selection rules, stripe rules, and define the
log type. The following log types may be defined:
dco Version 20 data change object (DCO) that can be used for both DRL and FastResync.
raid5 RAID-5 log.
The following examples demonstrate the application of the log rule:
◆ Create a striped RAID-5 log with 4 columns, and a DCO log, each of which are confined to
LUNs from a single (but possibly separate) enclosure:
parity true
log 1{
type raid5
confineto "Enclosure"
stripe 4
}
log 1{
type dco
confineto "Enclosure"
}
◆ Create a mirrored new-style DCO log, with each plex configured on a separate controller.
mirror 2
log 2{
type dco
separateby "Controller"
}