Datasheet

Intel® Server System SR2500AL Peripheral and Hard Drive Sub-System
Revision – 1.00
Intel order number D31980-004
55
The activity LED functionality is controlled directly by the hard drives. This causes the LED to
function differently between SAS and SATA drives. The expected operation is outlined below.
Table 41. Hard Drive Activity LED Functionality
Condition Drive Type Behavior
SAS Ready LED stays on Power on with no drive
activity
SATA Ready LED stays off
SAS Ready LED blinks off when processing a
command
Power on with drive activity
SATA Ready LED blinks on when processing a
command
SAS Ready LED stays off Power on and drive spun
down
SATA Ready LED stays off
SAS Ready LED blinks* Power on and drive spinning
up
SATA Ready LED stays off
5.5.2.3 Optional 6
th
Hard Drive
The backplane is capable of supporting a 6
th
hot-swap SAS/SATA hard drive with the addition of
an optionally installed backplane add-in board. The 6
th
drive add-in board assembly consists of
a PCB with power and interface connectors, and a mounting bracket allowing for the add-in card
to slide into a fitted cut out on the existing backplane.