Sun Storage 3510 FC Array
 
Sun Storage 3511 SATA Array
 

GCS>Sun Microsystems>Storage - Disk>Modular Disk - 3xxx Arrays
 

Applies to:

Goal

This document describes the necessary cabling for 2
attached JBODs to a Sun Storage 351x Array . More importantly,
this document displays the disk drive IDs when the 351x 'ID Switch' is
set to numbers 0-7.

Solution

To connect a JBOD (Just a Bunch Of Disks) to a 351x RAID Array, where FC2 is a 'drive-channel' 
port on one of the RAID controllers in a dual-controller array setup:

Connect a cable from the top Raid controller's FC2 SFP port to the Upper-Left
JBOD's SFP port (LOOP A).  Then connect a cable from the lower Raid controller's FC2 SFP 
port to the Lower-Left JBOD's SFP port (LOOP B).

If a 2nd JBOD is attached to the above configuration, use the above cabling scheme and do 
the following for the 2nd JBOD:

Connect a cable going from the 1st JBOD's Upper-Right SFP port to the 2nd JBODs  
Upper-Right SFP port.  Then connect a cable going from the 1st JBOD's  Lower-Right SFP 
port  to the 2nd JBODs Lower-Right SFP port.An additional step is required in configuring 
3510FC/JBODs compared to 3310SCSI/JBODs.

Loop IDs on Expansion Units

When an expansion unit is attached to a RAID array, unique, hard-assigned loop IDs are 
assigned to each expansion unit drive.  A loop ID is the decimal version of an AL_PA.  
The lowest number loop ID is the lowest priority address on the loop.

On the left front side of an expansion unit, an ID switch is used to set the loop IDs for 
the disk drives to a different range of values so that the same IDs are not repeated on 
the same loop (DEVICE ADDRESS CONFLICTS).  3510 RAID arrays also have an ID Switch.  
To access the ID switch, open and remove the front bezel, and slightly twist the left 
ear cover to remove it.  Press the button to change the ID number.  After the ID is set, 
snap the ear cover back in place and re-install the front bezel.

By default, the ID switch on all 3510FC RAID arrays and expansion units is set to 0, 
where the range of IDs is automatically 0 to 12 for 12 drives.  The IDs 13 through 15 
are ignored.  The 3310 SCSI arrays & JBODs do not have an ID switch.
The ID switch offers 8 ID ranges. Each range/set contains 16 IDs.  
The last 4 IDs in each range are ignored.

ID Switch Setting	ID Range
0			0-15
1			16-31
2			32-47
3			48-63
4			64-79
5			80-95
6			96-111
7			112-125
Target Disk drive(s) Loop IDs are 0-11(ID Switch is set to 0; Chassis ID 0)
0	3	6	9
1	4	7	10
2	5	8	11	(SES Loop ID is 12)
Target Disk drive(s)  Loop IDs are 16-27 (ID Switch is set to 1; Chassis ID 1)
16	19	22	25
17	20	23	26
18	21	24	27	(SES Loop ID is 28)
Target Disk drive(s)  Loop IDs are 32-43  (ID Switch is set to 2;Chassis ID 2)
32	35	38	41
33	36	39	42
34	37	40	43	(SES Loop ID is 44)
Target Disk drive(s)  Loop IDs are 48-59 (ID Switch is set to 3;Chassis ID 3)
48	51	54	57
49	52	55	58
50	53	56	59	(SES Loop ID is 60)
Target Disk drive(s)  Loop IDs are 64-75  (ID Switch is set to 4;Chassis ID 4)
64	67	70	73
65	68	71	74
66	69	72	75	(SES Loop ID is 76)
Target Disk drive(s)  Loop IDs are 80-91 (ID Switch is set to 5;Chassis ID 5)
80	83	86	89
81	84	87	90
82	85	88	91	(SES Loop ID is 92)
Target Disk drive(s)  Loop IDs are 96-107 (ID Switch is set to 6;Chassis ID 6)
96	99	102	105
97	100	103	106
98	101	104	107	(SES Loop ID is 108)
Target Disk drive(s)  Loop IDs are 112-123 (ID Switch is set to 7;Chassis ID 7)
112	115	118	121
113	116	119	122
114	117	120	123	(SES Loop ID is 124)

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