Hard Disk Drives; Disk Mirroring - Nokia 500s Installation Manual

1
Overview
Note
The symbols in Table 3 are visibly only if there is an alarm condition, as
specified.

Hard Disk Drives

The Nokia 500s appliance supports up to two hard disk drives. The 500s
comes with two hard disk drives as the standard package. The hard disk drives
support hot swapping, and an optional disk-mirroring feature, described in the
following section.

Disk Mirroring

The Nokia disk-mirroring feature provides fault tolerance by allowing the
500s appliance to continue working in the event of a disk failure. You can
create mirror sets that consist of a source hard disk drive (which holds the
active copy of the operating system) and mirror hard disk drive. The mirror
hard disk drive contains a copy of all of the files on the source hard disk drive,
and if the source hard disk drive fails, the mirror hard disk drive immediately
takes over. The 500s appliance continues to operate normally, and the
switchover to the secondary mirror drive should be transparent to your data
connections.
You can use Nokia Network Voyager to create and delete mirror sets.
Note
If your 500s appliance contains two hard disk drives when you receive it,
the disk-mirroring feature is already enabled.
For more information about disk mirroring, including configuration details,
see the Nokia Network Voyager Reference Guide and the IPSO Release Notes
and Getting Started Guide for the version of IPSO you are running.
26 Nokia 500s Installation Guide