| Table |
|
|
Feature | Description |
PCI slots | Three PCI expansion card slots are available in the PCI module. |
| Note that Slot 1 is reserved for a graphics video card. |
Embedded | Three embedded adapters are available as follows: |
adapters | – LAN X 2 |
| – SCSI disk |
Network port | Two Ethernet ports for connecting to a network from the embedded LAN |
| adapters. |
|
|
Storage Bays
Each PCI module has a storage area containing three storage bays that support three hard disk drives (three logical disks). The hard disk drives are CRUs, hot pluggable, and redundant. The disk slots are physically numbered 1 – 3, bottom to top in the left PCI module (Group 1) and are physically numbered 4 – 6, bottom to top in the right PCI module (Group 2) as seen from the front of the tower system. The disk drives SCSI ID numbers are 0, 1, 2, bottom to top for each group of logical disk drives and the first mirrored pairs are physical drives 1 and 4 that contain the boot software, as shown below. See Figure
GROUP 1 | GROUP 2 |
|
|
SCSI ID 2 | SCSI ID 2 |
Disk #3 | Disk #6 |
SCSI ID 1 | SCSI ID 1 |
Disk #2 | Disk #5 |
SCSI ID 0 | SCSI ID 0 |
Disk #1 | Disk #4 |
For true dual modular redundancy, all the disk drives must be mirrored in the system, as shown below. All the disk drives must be added in pairs and only similar disks can mirror each other. Pairs include drives 1 and 4, 2 and 5, and 3 and 6.
Mirrored Drives
PCI Module | PCI Module |
Group 1 | Group 2 |
|
|
Drives | Drives |
|
|
3 | 6 |
|
|
2 | 5 |
|
|
1 | 4 |
|
|
