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Intel® Server Chassis SC5300 5U Kit TPS
5.
Hard Disk Drive Bays
5.1
Server Chassis SC5300 4HDD and 6HDD SCSI HSBP Overview
The Server Chassis SC5300 4HDD or 6HDD SCSI Hot Swap Backplane (HSBP) is a monolithic
printed circuit board. The architecture is based on the QLogic
controller and has support for up to 4 or 6 SCSI drives.
The 4HDD and 6HDD SCSI HSBP supports the following feature set:
•
*
QLogic
GEM359 enclosure management controller
o External non-volatile Flash ROM
2
o Two I
C interfaces
o Low Voltage Differential (LVD) SCSI Interface
o SCSI-3 compatible
o Compliance with SCSI Accessed Fault Tolerant Enclosures (SAF-TE) specification,
version 1.00 and addendum
o Compliance with Intelligent Platform Management Interface (IPMI)
•
Support for up to 4 or 6 each U320 LVD SCSI Drives
o Onboard LVD SCSI Termination
•
Hot Swap Power Controller
•
Temperature Sensor
•
FRU EEPROM
•
Two 4-pin Standard HD Power Connectors
5.1.1
SCSI Enclosure Management Controller
*
The QLogic
GEM359 is an enclosure management controller for the SCSI backplanes and
monitors various aspects of a storage enclosure. The chip provides in-band SAF-TE and SES
management through the SCSI interface. The GEM359 also supports the IPMI specification by
providing management data to a baseboard management controller through the IPMB.
The hot-swap SCSI backplane board set resides in the hot swap drive bay, which is included
with the 650-W redundant chassis and/or is available as an upgrade.
The SCSI interface on the LVD SCSI backplane provides the link between the SCSI bus and the
SCSI Accessed Fault Tolerant Enclosure (SAF-TE) controller. The SAF-TE interface allows the
enclosure management controller to respond as a SCSI target to implement the SAF-TE
protocol.
Power control on the LVD SCSI backplane supports the following features.
•
Spin-down of a drive when failure is detected and reported (using enclosure services
messages) via the SCSI bus. An application or RAID controller detects a drive-related
problem that indicates a data risk. In response, it removes the drive from service and
sends a spin-down SCSI command to the drive. This decreases the likelihood that the
drive will be damaged during removal from the hot-swap drive bay. When a new drive is
Revision 1.31
Hard Disk Drive Bays
*
GEM359 enclosure management
53
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