Upgrading Controllers - IBM DS4800 User, Installation And Maintenance Manual

21. Use the DS4000 Storage Manager client software to print a new storage

Upgrading controllers

The IBM System Storage DS4800 Controller Cache Upgrade Kit enables you to
upgrade the DS4800 controller memory cache either in the DS4800 storage
subsystem models 82A/H to 4 GB of memory cache per controller or in the DS4800
storage subsystem models 82A/H and 84A/H to 8 GB of cache memory per
controller. There are three DS4800 controller cache upgrade options that are
available from IBM:
v DS4800 Model 82A/H Cache upgrade to 8 GB. This option upgrades the DS4800
v DS4800 Model 82A/H Cache upgrade to 16 GB. This option upgrades the
v DS4800 Model 84A/H Cache upgrade to 16 GB. This option upgrades the
Important:
v The machine type and model for the DS4800 are printed on the product label
v Whenever you add options to your DS4800 storage subsystem, be sure to
Attention:
the controller CRUs in this upgrade kit. If separate return processing instructions for
the DS4800 controller CRUs you replace are included with this upgrade kit, follow
the instructions to return the replaced controllers.
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IBM System Storage DS4800 Storage Subsystem: Installation, User's, and Maintenance Guide
client Subsystem Management window to identify any new faults. Do any
storage subsystems have a fault (Needs Attention) status?
v Yes – Select the Recovery Guru toolbar button in the Subsystem
Management Window, and complete the recovery procedure. If the problem
persists, contact your IBM service representative.
v No – Go to step 21.
subsystem profile.
controllers with 2 GB of cache memory per controller to DS4800 controllers with
4 GB of cache memory per controller.
DS4800 controllers with 2 GB of cache memory per controller to DS4800
controllers with 8 GB of cache memory per controller.
DS4800 controllers with 4 GB of cache memory per controller to DS4800
controllers with 8 GB of cache memory per controller.
affixed to the DS4800 storage subsystem chassis. As a result, the label that
identifies this information does not change when you perform a DS4800
controller upgrade. However, after you upgrade the controller cache, the DS4800
storage subsystem functions as and is treated as the DS4800 model with the
cache memory to which you have upgraded. If you perform a future controller
replacement, ensure that you identify the correct controller part number for your
DS4800 and mention that you have previously upgraded the DS4800 storage
subsystem controllers.
update the MAC information in Appendix B, "Records," on page 179.
Do not dispose of the DS4800 controller CRUs that you replace with