Midplane, Disk modules, Midplane disk modules – Grass Valley K2 Level 3 RAID Dec.09 2005 User Manual
Page 19
November 23, 2005
Level 3 RAID Instruction Manual
19
Midplane
An operating primary RAID chassis must have, at a minimum, the first three physical
drives (00 - 02) installed, as the RAID configuration information is written to these
drives. Microcode is also written to these disks when RAID controller microcode is
loaded.
Midplane
The midplane distributes power and signals to all the chassis components. All FRUs
plug directly into midplane connectors.
Disk modules
Each disk module consists of a Fibre Channel disk drive in a carrier assembly. If a
disk drive fails, and needs replacing, you can do so while the RAID Storage Chassis
is powered up. Replacement disk drives begin rebuilding immediately after being
installed. (See
“Removing and installing disk modules” on page 43
The disk drives are 3.5-inch FC-AL drives that conform to the Fibre Channel
Arbitrated Loop (FC-AL) standards and support dual-port FC-AL interconnects
through the two RAID controllers and their cabling.
0
00
0
01
0
02
0
03
0
04
Disk Modules
Primary chassis
Expansion chassis
0
05
0
06
0
07
0
08
0
09
0
0
A
0
0
B
0
0
C
0
0
D
0
0
E
Disk
ID
Chassis
Address
1
10
1
11
1
12
1
13
1
14
Disk Modules
1
15
1
16
1
17
1
18
1
19
1
1
A
1
1
B
1
1
C
1
1
D
1
1
E