2. Expansion (Out), on Controller B
3. Host (In), on Controller B
4. Enclosure address, on Controller A (not used)
5. Power (Green) or Fault (Amber), on Controller A
6. Bus ID, on Controller A
7. Host link active, on Controller A
8. Expansion link active, on Controller A
9. LEDs: Controller A: Power LED, Power fault: Amber, Blower fault: Amber
7. Restart the Data Domain system. As the system boots up, the HOST/
EXPANSION LEDs on the shelf controller ports that are connected to the SAS
HBAs in the Data Domain system change from off to blue or green (see LED
information in
Back panel: Power/cooling module and shelf controllers
on page
13).
If any of these LEDs stays off or is not running at normal speed (see the table in
Back panel: Power/cooling module and shelf controllers
on page 13), it means
there is a problem in the connection between the system and the shelf. Reseat
or replace the cable and check the LEDs again. If the connection still has a
problem, replace the controller module or the SAS HBA.
Verifying shelf installation
The Data Domain system recognizes all data storage (system and attached shelves) as
part of a single file system volume.
WARNING
l
Do not remove or disconnect a shelf that has been added earlier. If a shelf is
disconnected, the file system volume is immediately disabled and all data in
the volume is lost.
l
To re-enable a shelf, reconnect the shelf or transfer the disks from the shelf
to another empty shelf chassis and connect.
l
If the data on a shelf is not available to the file system volume, the volume
cannot be recovered.
l
Unless the same disks are available to the file system, the DD OS must be re-
installed as directed by your contracted service provider or the Online
Support site,
.
Procedure
1. After installing the new shelves, check the status of the SAS HBA cards by
entering the
disk port show summary
command:
#
disk port show summary
Port Connection Link Connected Status
Type Speed Enclosure IDs
---- ---------- ------- ------------- -------
2a SAS 12 Gbps 4 online
2b SAS offline
2c SAS offline
2d SAS offline
3a SAS 24 Gbps 2 online
3b SAS offline
3c SAS offline
3d SAS offline
Post-Installation Tasks
Verifying shelf installation
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