Editing SAS Power Down

To spin down the SAS hard disks hdparm cannot be used (due to missing SATA part):
 sg_start --stop /dev/sdl
 sg_start --start /dev/sdl

Turn off led for a slot:
 sg_ses --descriptor Slot12 --clear=ident /dev/sg1
[http://sg.danny.cz/sg/sg_ses.html]

 # lsscsi -g
 [0:0:0:0]    disk    ATA      Samsung SSD 840  6B0Q  /dev/sda   /dev/sg0
 [1:0:0:0]    disk    ATA      Samsung SSD 840  4B0Q  /dev/sdk   /dev/sg11
 [8:0:0:0]    disk    ATA      ST6000NM0024-1HT SN05  /dev/sdb   /dev/sg1
 [8:0:1:0]    disk    ATA      ST6000NM0024-1HT SN05  /dev/sdc   /dev/sg2
 [8:0:2:0]    disk    ATA      ST6000DM004-2EH1 DN03  /dev/sdd   /dev/sg3
 [8:0:4:0]    disk    ATA      WDC WD6001FFWX-6 0A81  /dev/sdf   /dev/sg5
 [8:0:5:0]    disk    SEAGATE  ST10000NM0096    E001  /dev/sdg   /dev/sg6
 [8:0:6:0]    disk    SEAGATE  ST10000NM0096    E001  /dev/sdh   /dev/sg7
 [8:0:7:0]    disk    SEAGATE  ST10000NM0096    E001  /dev/sdi   /dev/sg8
 [8:0:8:0]    disk    SEAGATE  ST10000NM0096    E001  /dev/sdj   /dev/sg9
 [8:0:9:0]    enclosu LSI      SAS3x36          0601  -          /dev/sg10
 [8:0:10:0]   disk    ATA      ST6000NM0044     G002  /dev/sdl   /dev/sg12
 # sg_ses -C ident -x 5 /dev/sg10