Enclosure Management; Fan Control; Miscellaneous Functions; I 2 C Serial Bus Interface - Intel SSR212CC Technical Product Specification

Intel® Storage System SSR212CC
1.5

Enclosure Management

The enclosure management controller monitors various aspects of a storage enclosure.
Note: Enclosure Management Software is available from Intel for the Red Hat*
Enterprise Linux* AS 4, update 2 operating system. Intel® Server Management Software
is also available for Microsoft* Windows* Storage Server 2003 R2 and Microsoft*
Windows* Server 2003 Enterprise Edition SP1 operating systems. However, limited
enclosure management (no hard disk drive, fan or power supply monitoring) is provided
via Intel® Server Management software on the Intel Storage Server SSR212CC.
The enclosure management controller is comprised of the following elements and supports
associated features:
Vitesse* VSC055 (Enhanced Two-Wire Serial controller)
•
o Drive fault LED
o Drive presence detection
2
o I C link to Intel® Server Board SE7520JR2
o 8× fan speed (tacho) input
o 2× PWM output
o 3 I/O signals to operator panel capable of driving LED's
CPLD (Altera* EPM3128ATC100-10)
•
o Alarm output
o Alarm event monitor (enclosure, disk drive and PSU status)
o Cooling module fault LED mounted to rear of backplane
o Software override capability through I
1.5.1

Fan Control

PWM high-side drive configuration
•
Fan tach filtering
•
Protective diodes on all hot-swappable signal lines
•
1.5.2

Miscellaneous Functions

2
I C EEPROM for FRU data
•
2
1.5.3 I C Serial Bus Interface
The enclosure management controller supports four independent I
speeds of up to 400 Kb/s.
The figure below provides a block diagram of I
System SSR212CC SATA Hot Swap Backplane (HSBP).
Revision 1.2
2
C
2
C interface ports with bus
2
C bus connection implemented on the Storage
Feature Summary
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