Technical data

3–8 Upgrading the Subsystem
Using CLCP to Install, Delete, and List
Software Patches
Use CLCP to manage software patches. These small programming changes are placed
into the controller’s non-volatile memory and become active as soon you restart the
controller. There is space for about ten patches, depending upon the size of the
patches you’re installing.
Keep the following points in mind while installing or deleting patches:
■ Patches are associated with specific software versions. CLCP verifies the patch
against the currently installed version.
■ Patches are sequential: patch one must be entered before patch two, and so on.
■ Deleting one patch also deletes all higher-numbered patches. For example, if you
delete patch two, you’ll automatically delete patches three, four, and so on.
■ Controllers in a dual-redundant configuration must have the same patches. You
must install patches into each controller separately.
Installing a Software Patch
Use the following steps to install a software patch:
1. Obtain the patch file from a customer service representative or via the Internet at:
http://www.storage.digital.com/menusupport.htm.
2. Connect a PC or terminal to the controller’s maintenace port.
3. From the host console, quiesce all port activity.
4. Start CLCP with the following command:
RUN CLCP