Upgrading A Single-Controller To A Dual-Controller When There Is No Attached Exp3500 Enclosure - IBM DS3500 Installation, User's, And Maintenance Manual

2. Use the storage enclosure Rack Installation Instructions document to install the new storage
enclosure in the rack.
3. Connect the power cables to the new storage enclosure.
4. Power-on the storage enclosure.
5. Connect one end of a Serial Attached SCSI (SAS) cable to the Drive expansion port on Controller A
in the DS3500 storage subsystem.
6. Connect the other end of the SAS cable to either of the In ports on the left ESM in the storage
enclosure.
7. Connect one end of a second SAS cable to the Drive expansion port on Controller B in the DS3500
storage subsystem.
8. Connect the other end of the second SAS cable to the In port on the right ESM in the storage
enclosure.
9. Wait until the storage subsystem status is Optimal in the Storage Manager software before
proceeding to step 10.
10. Add the drives to the storage enclosure. Make sure that you wait at least 30 seconds for the Storage
Manager software to recognize each newly added drive before you install another drive.
To add additional storage enclosures after the first storage enclosure is connected to a dual-controller
DS3500 storage subsystem that is running, complete the following steps:
1. Make sure that the storage subsystem status is Optimal in the Storage Manager software.
2. Use the storage enclosure Rack Installation Instructions document to install the new storage
enclosure in the rack.
3. Connect the power cables to the new storage enclosure.
4. Power on the storage enclosure.
5. Connect one end of a Serial Attached SCSI (SAS) cable to the In port on the left ESM in the storage
enclosure that is being added to the configuration.
6. Connect the other end of the SAS cable to the Out port on the left ESM in the last storage enclosure
in the configuration (this storage enclosure is directly connected to the Drive expansion port on
controller A of the DS3500).
7. On the last storage enclosure in the configuration, disconnect the SAS cable from the In port on the
right ESM and connect it to the In port on the right ESM on the new storage enclosure that is being
added to the configuration.
Note: When the SAS cable is disconnected in step 7, a loss of path redundancy occurs and an error
message is displayed in the Storage Manager Recovery Guru. Disregard the error message. The
redundant path is restored in step 8 after the SAS cable is connected.
8. Connect a SAS cable to the Out port on the right ESM of the new storage enclosure and connect the
other end to either of the In port on the right ESM in the storage enclosure that was previously
connected to controller B of the DS3500.
9. Wait until the storage subsystem status is Optimal in the Storage Manager software before
proceeding to step 10.
10. Add the drives to the storage enclosure. Make sure that you wait at least 30 seconds for the Storage
Manager software to recognize each newly added drive before you install another drive.
Upgrading a single-controller to a dual-controller when there is no
attached EXP3500 enclosure
If you are upgrading a single-controller DS3500 storage subsystem to a dual-controller DS3500 storage
subsystem and there are no EXP3500 storage enclosures attached to the DS3500 storage subsystem, see
"Installing a controller" on page 5-3.
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System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide