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Chapter 3. Sub-system Configuration Setup
J4060-02 User Manual
3.6.5.2 How to turn on/off the power of a drive slot (EDGE only)
Array Device Slot control element
BYTE/BIT
7
6
5
4
3
2
1
0
0
COMMON CONTROL
SELECT
PRDFAIL
DISABLE RST SWAP
Reserved
1
RQST OK
RQST
RSVD
DEVICE
RQST HOT
SPARE
RQST
CONS
CHECK
RQST
IN CRIT
ARRAY
RQST IN
FAILED
ARRAY
RQST
REBULD/
REMAP
RQST R/R
ABORT
2
RQST
ACTIVE
DO NOT
REMOVE
Reserved
RQST
MISSING
RQST
INSERT
RQST
REMOVE
RQST
IDENT
Reserved
3
Reserved
RQST
FAULT
DEVICE
OFF
ENABLE
BYP A
ENABLE
BYP B
Reserved
The "DEVICE OFF" for a drive slot is defined in the bit4, byte3 of the "Array Device Slot
control element" in the SES specification. Set the bit to turn off a slot power, and vice versa.
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 4U60: Edge-L 0c2a
(B) Get the current state of a slot power. The "Device off=0" means the slot power is on.
$ sg_ses --page=2 /dev/sg2
Element 0 descriptor:
App client bypass B=0, Fault sensed=0, Fault reqstd=0, Device off=0
(C) Get the descriptor of a slot power
$ sg_ses --page=7 /dev/sg2
Element 0 descriptor: Disk001
(D) Turn off a slot power
$ sg_ses --descriptor=Disk001 --set=3:4:1 /dev/sg2
(E) Turn on a slot power
$ sg_ses --descriptor=Disk001 --clear=3:4:1 /dev/sg2
Summary of Contents for JBOD Series
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Page 40: ...31 J4060 02 User Manual Chapter 3 Sub system Configuration Setup...
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