Intel S7000FC4UR Technical Product Specification

SAS Backplane Intel® Server System S7000FC4UR
Revision 1.0
64
7.3.6 SAS Drive Functionality
The SAS backplane provides connections for a maximum of eight SAS drives. Each drive can
be inserted and removed while the system is powered-on and automatic detection and rate
negotiation are performed after each insertion. The SAS backplane provides +5V and +12V to
each drive connector and supports in-rush current limiting to 300mA during hot swapping.
7.3.7 Power Control Interlock
The power control interlock is part of the SAS specification. This prevents drives from powering
on at the same time. Since only one drive can power on at once the board power requirements
can be kept lower.
7.3.7.1 System Status Notification
Internal SAS drive status information is collected by the Vitesse* VSC410 storage management
controller. The information can be monitored by accessing the VSC410’s serial port. Output
drive strength and input pre-emphasis may also be controlled via the serial port. In addition, any
drive data can be routed to the server management via the IPMB.
7.3.7.2 SAS Status LEDs
The status LEDs gives the user a visual indication of the drives’ condition. There is a single
green LED (activity - left) and a single amber LED (fault - right) for each drive. The LEDs use a
combination of color and blinking frequency to indicate multiple conditions.
The hard drive status LEDs are located on the SAS backplane and projected out the front of the
carrier via light pipes. The states of the LEDs are described in Table 14.
Table 14. SAS Hard Drive LED Details
LED State Description
Green On The hard drive is configured and ready for access.
Green Blinking The hard drive is active.
Amber On Hard drive/slot failure.
Amber Slow Blinking (~1Hz) A predictive hard drive/slot failure or rebuild in process
Amber Fast Blinking (~2.5Hz) Hard drive rebuild interrupted, rebuild on empty slot, or identify slot
7.3.8 SAS Enclosure Management
SAS enclosure management allows the SAS backplane to report SAS drive status and
backplane temperature readings. A SAS RAID controller will interface with the enclosure
management. The SAS enclosure management subsystem consists of one VSC storage
management controller, and the associated serial peripheral interface (SPI) Flash and
electrically erasable programmable read-only memory (EEPROM) memory devices.

Intel S7000FC4UR Specifications

General

Brand	Intel
Model	S7000FC4UR
Category	Server
Language	English