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Connecting Hardware Devices
Small Computer Systems Interface (SCSI)
Internal Hard Disk Drives (HDD)
The Toshiba Magnia 3135R has four SCSI HDD bays.
Each internal bay is assigned a unique SCSI address starting with Bay 1 (SCSI ID=0) for
the top bay in the drive cage.
For example:
0
2
❖
Bay 1 = SCSI ID 0
❖
Bay 3 = SCSI ID 2
When adding a hard disk drive to the server, always position the drive(s) sequentially,
beginning with the first vacant drive bay with the lowest available SCSI ID.
Detecting the SCSI Device (SAF-TE)
SAF-TE communicates its status to a software agent resident in the server through a
SCSI bus, and then sends out an appropriate notification. This notification includes:
❖
Presence of a device
❖
Status of a device bay slot
DEFINITION: SAF-TE (SCSI Accessed Fault Tolerant Enclosure) is a standardized
alert detection and status reporting system using SCSI as the underlying transport
mechanism.
Terminating SCSI Devices
The SCSI bus is terminated on the server board with active terminators that cannot be
disabled. The onboard device must always be at one end of the bus.
TECHNICAL NOTE: Make sure to route the SCSI cable so that it does not come in
contact with the fan assembly.
1
3
❖
Bay 2 = SCSI ID 1
❖
Bay 4 = SCSI ID 3
Small Computer Systems Interface (SCSI)
74
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