AIC 12Gb/s SAS JBOD Series, User Manual, Page: 62 / 105

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J4024-01 User 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 4U24SAS3swap 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