User`s guide

342 Implementing an Open IBM SAN
Select the composite drive and then click the Properties button. The Composite
Drive Properties dialog box opens, as shown in Figure 5-19.
Figure 5-19 Composite Drive Properties
Here you can find information on the Composite Drive about the member drives
that make up the composite, as well as the Composite Drive characteristics.
Clicking on the Identify Composite button will cause the LED on the actual
SSA drives, that belong to the Composite, to flash. If a member drive is selected
and the Identify Member button is chosen, then the LED only on that drive will
flash. In both cases a dialog box will appear to allow you to stop the flashing.
5.6 Mirror drive
A 2-way mirror drive has two drives that contain exactly the same information.
The SLIC Router can also support a 3-way mirror or 1-way mirror. A 3-way mirror
consists of three drives with the same information. A 1-way mirror is a single
drive, or single composite drive, that is used with an Instant Copy Drive that can
attach to the single drive mirror to synchronize the data. The Instant Copy Drive
can then be split off from the mirror to perform a backup or other action.
The Instant Copy Drive feature can be used with 2-way and 3-way mirrors as
well.