LaCie Professional Server
Disk Numbering
Technical Brief: RAID
page 11
4. Disk Numbering
The 5big Storage Server uses Windows Storage Server Disk Man-
agement to configure RAID. Before reading how to create and repair
the RAID arrays, it may be helpful to know how the utility assigns
numbers to the physical disks. Please note that disk number assign-
ment in Disk Management differs from the LaCie Hardware Monitor
(see
Technical Brief: LaCie Hardware Monitor
and
4.2. Disk Num-
bering: LaCie Hardware Monitor
).
4.1. Disk Numbering: Windows Disk
Management
Fig. 10
illustrates how Windows Disk Management lists the default
5big Storage Server RAID configuration: disk numbers, levels of
RAID, and the health of the disks.
Fig. 11
shows how the Windows
Disk Management numbers correlate with the physical placement
of the disks. (See
5.1. Default RAID
for further information on the
default RAID settings for a five disk 5big Storage Server.)
Please note that each disk takes part in two RAID configurations.
For example, approximately 35 GB of
Disk 0
is part of a mirror that
runs the Windows Storage Server operating system. The remainder
of
Disk 0
is also one of five drives that make up the Data volume,
a RAID 5 array.
During standard operation, the numbering will not change. How-
ever, if a disk should fail, the default disk numbering could become
confused, especially if the 5big Storage Server is restarted when a
disk is missing.
Missing
could indicate:
✦
Disk failure
✦
A disk physically removed from its slot.
continued on the next page>>
DESIGNED BY NEIL POULTON
POWER
LAN 1
USB
USB
eSATA
eSATA
VGA
LAN 1
USB
USB
LAN 2
0
1
2 3 4
Fig. 10
Fig. 11
MANUAL NOTE:
To best demonstrate disk numbering, this sec-
tion uses the LaCie default configuration of a 5big Storage Server
with five disks. The amount of disks as well as the RAID configura-
tions may appear different based upon your 5big Storage Server.