Spare Drives; Global And Local Spare Drives; Figure 1 - 9 Local (Dedicated) Spare; Figure 1 - 10 Global Spare - Compaq External RAID Controller & Subsystem Infortrend Operation Manual

1.4

Spare Drives

Global and Local Spare Drives

Figure 1 - 9 Local (Dedicated) Spare

X
Local 1
Spare
Drive
LS
Logical Drive
Global Spare Drive
GS
1 2
3
Logical Drive 0

Figure 1 - 11 Global Spare Rebuild

1-6
When one member
drive fails, the Local
2
Spare Drive joins the
logical drive and
automatically starts
to rebuild.
3
Global Spare Drive
GS
1 2 1
4
Logical Drive 1 Logical Drive 2
Local Spare Drive is a standby drive
assigned to serve one specified logical
drive. When a member drive of this
specified logical drive fails, the Local
Spare Drive becomes a member drive
and automatically starts to rebuild.

Figure 1 - 10 Global Spare

Global Spare Drive not only
serves one
drive. When a member drive
from any of the logical drive
fails, the Global Spare Drive will
join that
automatically starts to rebuild.
2
Global Spare Drives serve
3
any logical drive.
The external RAID controllers provide
both Local Spare Drive and Global
Spare Drive functions. On certain
occasions, applying
functions together
various needs. Take note though that
the Local Spare Drive always has
higher priority than the Global Spare
Drive.
When a member drive from
any logical drive fails, the
Global Spare Drive joins
that logical drive and
automatically starts to
rebuild.
Functional Description
specified logical
logical drive and
these two
will better fit