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Chapter 1. Overview of the SAN Volume Controller
SAN Volume Controller
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© Copyright IBM Corp. 2003, 2005
This chapter describes the SAN Volume Controller and all of its components.
Related concepts
"SAN Volume Controller"
The SAN Volume Controller is a SAN appliance that attaches open-systems
storage devices to supported open-systems hosts.
Related reference
"Controls and indicators for the SAN Volume Controller" on page 5
Controls and indicators are located on the front panel of the SAN Volume
Controller.
"SAN Volume Controller rear panel indicators" on page 7
The controls and indicators for the SAN Volume Controller are contained on the
front and back panel assembly.
"SAN Volume Controller hardware" on page 9
The SAN Volume Controller hardware is identified in the chart and shown in the
graphic below.
"SAN Volume Controller connectors" on page 11
The external connectors for the SAN Volume Controller can be located easily.
"Preparing your SAN Volume Controller environment" on page 12
Before installing the SAN Volume Controller, prepare the physical environment.
The SAN Volume Controller is a SAN appliance that attaches open-systems storage
devices to supported open-systems hosts.
The IBM TotalStorage SAN Volume Controller provides symmetric virtualization by
creating a pool of managed disks from the attached storage subsystems, which are
then mapped to a set of virtual disks for use by attached host computer systems.
System administrators can view and access a common pool of storage on the SAN,
which enables them to use storage resources more efficiently and provides a
common base for advanced functions.
The SAN Volume Controller is analogous to a logical volume manager (LVM) on a
SAN. It performs the following functions for the SAN storage that it is controlling:
v Creates a single pool of storage
v Logical unit virtualization
v Manages logical volumes
v Provides advanced functions for the SAN, such as:
– Large scalable cache
– Copy services
®
- FlashCopy
(point-in-time copy)
- Metro Mirror (synchronous copy)
- Data migration
– Space management
- Mapping that is based on desired performance characteristics
- Quality of service metering
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