J4076-01 User's Manual
59
Chapter 3 Sub-System configuration Setup
3.6.5.4 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
When the identify LED of Hub is off, the identity is disabled. When solid
on, 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 4U76swap: Hub 0c07
(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
