Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

the volume configuration for any possible performance impact. It is also a good
idea to designate additional disks as spares to augment the spare pool.
While a disk is designated as a spare, you cannot use the space on that disk for
the creation of VxVM objects within its disk group. VxVM also lets you free a spare
disk for general use by removing it from the pool of hot-relocation disks.
About DMP-supported disk arrays
VxVM provides administrative utilities and driver support for disk arrays that
can take advantage of its Dynamic Multipathing (DMP) feature. Some disk arrays
provide multiple ports to access their disk devices. These ports, coupled with the
host bus adaptor (HBA) controller and any data bus or I/O processor local to the
array, make up multiple hardware paths to access the disk devices. Such disk
arrays are called multipathed disk arrays. This type of disk array can be connected
to host systems in many different configurations, (such as multiple ports connected
to different controllers on a single host, chaining of the ports through a single
controller on a host, or ports connected to different hosts simultaneously). DMP
is available for multiported disk arrays from various vendors and provides
improved reliability and performance by using path failover and load balancing.
See the Veritas Volume Manager Administrator's Guide.
See the Veritas Volume Manager Hardware Notes.
About dynamic LUN expansion
Dynamic LUN expansion allows you to resize a disk after it has been initialized
while preserving the existing data on the disk.
See the Veritas Volume Manager Administrator's Guide.
About Storage Expert
Storage Expert consists of a set of simple commands that collect VxVM
configuration data and compare it with “best practice.” Storage Expert then
produces a summary report that shows which objects do not meet these criteria
and makes recommendations for VxVM configuration improvements.
These user-configurable tools help you as an administrator to verify and validate
systems and non-optimal configurations in both small and large VxVM
installations.
Storage Expert components include a set of rule scripts and a rules engine. The
rules engine runs the scripts and produces ASCII output, which is organized and
archived by Storage Expert's report generator. This output contains information
about areas of VxVM configuration that do not meet the set criteria. By default,
Introducing Veritas Storage Foundation for Oracle
How Veritas Volume Manager works
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