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connecting Multiple Expansion Shelves
NOTE:
This guide describes the installation of new systems comprised of
all-ES20 or all-ES30 shelf models. Configurations including a mix of both shelf
models are subject to additional configuration constraints. The instructions for
mixing ES30 and ES20 shelves are in the ES30 Hardware Guide.
ExPanSion ShElF cablinG
The system supports any combination of 16 and 32 TB shelves (ES20) or
15 and 30 TB shelves (ES30), up to a maximum of 24 shelves or 768 TB of
raw storage. Multiple expansion shelves are connected together and to the
controller with qualified SAS cables. Save extra SAS cables for future shelf
expansion. See Figure 5 and Figure 6 for the recommended cabling of a
24-shelf system configuration.
ES20 Expansion Shelves
4 Use a SAS cable with an SFF-8088 (mini-SAS) connector to connect to the SAS
port on the controller and an SFF-8470 connector to connect to the ES20.
4 Use a SAS cable with two SFF-8470 connectors to connect two ES20s.
4 SAS connectors must be secured with their locking screws and cables
properly dressed and supported using the included Velcro straps.
ES30 Expansion Shelves
4 Use a SAS cable with SFF-8088 (mini-SAS) connectors for any ES30 SAS
connection. These are keyed and marked.
4 Cables should be dressed to the side of the rack and supported with
velcro straps to allow for easy removal of a controller or power supply.
hot aDDition oF ExPanSion ShElvES
Add shelves following the instructions in the Install Hardware section, steps
1, 2 and 3. As shown in Figures 5 and 6, shelves are cabled to HBA ports
in sets, with a maximum of 4 shelves per set, up to the maximum of 6 sets.
Fully populate one set before adding shelves to the next set, in numerical
order. Shelves 1-4 comprise set 1, shelves 5-8 comprise set 2, shelves 9-12
comprise set 3, shelves 13-16 comprise set 4, shelves 17-20 comprise set 5
and shelves 21-24 comprise set 6. The instructions for ES20 and ES30 are
identical, although the physical location of shelf port connectors are different.
The ES30 uses the markings to indicate a HOST port and to indicate an
EXP'N port.
FiGurE 5: rEcoMMEnDED ES20 cablinG DiaGraM
Shelf
Rack 2: Expansion
No.
24
23
22
21
20
19
18
17
16
15
14
13
Rack 1
Shelf
No.
12
11
10
9
8
7
6
5
Controller
4
3
2
1
adding the First Expansion Shelf to a Set
Follow these instructions for adding shelf 1, 5, 9, 13, 17, or 21. Referring to
the table below, add cables from the indicated HBA ports to the shelf A and B
HOST () ports.
Connect shelf
Connect shelf
controller B
controller A
HOST port (
)
HOST port (
Shelf
to HBA port
to HBA port
1
1b
3a
5
2b
1a
9
3b
2a
adding the Second, third or Fourth Expansion Shelves to a Set
(see Figure 5 or Figure 6)
Follow these instructions for adding shelves to an existing set (e.g., shelves
2-4, 6-8, 10-12, 14-16, 18-20, or 22-24). The new shelf becomes the highest
number shelf in its set.
1. At the set's previously highest-number shelf, move the shelf controller A
HOST port cable to the new shelf controller A HOST port.
2. Using a new SAS cable, connect the previously highest-number shelf
controller B EXP'N port to the new shelf controller B HOST port.
3. Using a new SAS cable, connect the previously highest-number shelf
controller A HOST port to the new shelf controller A EXP'N port.
Power-up and Final configuration
4 Power on the expansion shelf or shelves using the instructions in the
Install Hardware section.
4 Use the disk add enclosure when ready to put the enclosure into
use and expand the capacity of the system. The enclosure-id is always 2
for the first added shelf, and 3 for the second. The Data Domain controller
always has the enclosure-id of 1 (one).
disk add enclosure enclosure-id
FiGurE 6: rEcoMMEnDED ES30 cablinG DiaGraM
Shelf
No.
Rack 2
Host
Expander
B
24
A
B
23
A
B
22
A
B
21
A
B
20
A
B
19
A
B
18
A
B
17
A
16
B
A
15
B
A
B
14
A
B
13
A
EMC DATA DOMAIN DD860 ARCHIVER INSTALLATION AND SETUP GUIDE | SIDE 1
(see Figure 5 or Figure 6)
Connect shelf
Connect shelf
controller B
)
HOST port (
)
HOST port (
Shelf
to HBA port
to HBA port
13
1d
17
2d
21
3d
Shelf
Rack 1
No.
B
12
A
B
11
A
B
10
A
B
A
B
A
B
A
B
A
B
A
Controller
B
A
B
A
B
A
B
A
controller A
)
3c
1c
2c
9
8
7
6
5
4
3
2
1
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