If you don't connect the cable with proper looping it may not detect. If you want to use all disks ( mostly the SSA D40 drawer comes with 16 disks) to access to that server make sure, port 1 and 16 are connected with A1 and A2 of SSA adapter.
If you are connecting this drawer on existing loop, make sure you are connecting the cable at right port. and look behind if the green LED is slowing at the back of SSA adapter. It proves that looping is correct.
Finally you run "cfgmgr -l ssar" to detect the SSA disk.
One most important : Make sure the drawer is with all 16 disks. If there are slot where there is no disk, it may not detect. To make the connection it needs sometime dummy disk too.
Regards,
Sam