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Connecting Drive LED Control Cables
Drive LED Control Cables helps you to detect/verify the faulty drives and slots in the
Backplane or Enclosure. Using an internal SATA fan-out cable, connect the controller to the
SATA/SAS of the backplance. Ensure that the first data connector of the fan-out cable is
connected to the port 0 of the backplane and rest of the other connectors respectively. Note
that the port 0 starts at the bottom of the connector.
Note:
Depending on the jumper settings, the Backplane can be configured to use either I2C or
SGPIO.
The four data connectors in the fan-out end must be connected to the SATA/SAS ports present
in the enclosure. The sideband connector is connected to the I2C interface of backplane, and
this helps in enabling the function of drive LEDs.
Using Mini SAS (SFF-8087) cable, the SATA/SAS controller is connected to the Internal
Enclosure or Backplane. This has a built-in I2C connector, which helps in enabling the
function of drive LEDs.
Behavioral Pattern of Drive LED
Initialization of drives - If a SAS drive is present, the LED will blink continously till the I/O
●
operation is initiated. If a SATA drive is present, the LED glows once and then stops.
Read/Write operation in the disk -If a SAS drive is present, the LED will blink continously
●
till the I/O operation is complete. If a SATA drive is present, the LED will glow till the I/O
operation is complete.
Faulty conditions - If you encounter any errors such as bad sectors or drive failure, the
●
Fault LED will glow red untill the problem is rectified.
Chapter 8: Enclosure Management Support
Internal Mini SAS x4 (SFF-8087) to SATA
fanout cable with sideband - connects
controller to a maximum of four SATA
devices or a backplane.
Note: The sideband (SFF-8448) connector
is used to connect with a managed
backplane or enclosure.
Internal Mini SAS (SFF-8087) to SAS x4
(SFF-8484) - connects to SATA/SAS
backplane
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