48
J2012-01User Manual
Chapter 3 Sub-system Configuration Setup
3.6.5.5 How to identify the enclosure
Enclosure control element
BYTE/BIT
7
6
5
4
3
2
1
0
0
COMMON CONTROL
SELECT
PRDFAIL DISABLE
RST SWAP
Reserved
1
RQST
IDENT
Reserved
2
POWER CYCLE
REQUEST
POWER CYCLE DELAY
3
POWER OFF DURATION
REQUEST
FAILURE
REQUEST
WARNING
The power LED is used for the identity. When the power LED is solid on, the identity is
disabled. When blinking, the identity is enabled. The "RQST IDENT" for Enclosure is defined
in the bit7, byte1 of the "Enclosure control element" in the SES specification. Set the bit to
enable the identity. Clear the bit to disable the identity. We use the software package "sg3_
utils" on Linux for example, and have a SAS HBA and a cable to connect your host with the
expander.
(A) Show the device for AIC Expander Controller (canister)
$ sg_map -i
/dev/sg2 AIC 12G 2U12SAS3swap 0c01
(B) Enable the identity
$ sg_ses --descriptor=EnclosureElement01 --set=1:7:1 /dev/sg2
(C) Disable the identity
$ sg_ses --descriptor=EnclosureElement01 --clear=1:7:1 /dev/sg2
