Reconfiguring An Lcu With Larger Capacity 3390 Volumes; Increasing The Number Of 3390S Formatted Within An Lss; Copy Services; Copy Services Overview - IBM TotalStorage DS8000 User Manual

Reconfiguring an LCU with larger capacity 3390 volumes

Use the following process to reconfigure an LCU with larger capacity 3390 volumes.
To retain your data, you must offload the data from the address range of the ranks
to be reformatted by performing the following steps:
1. Confirm the raid ranks that are associated with the address range that is being
2. Vary the address range offline. This causes any associated parallel access
3. Issue Devserv (DS QP,xxxx,nnnn) using the alias addresses to confirm aliases
4. Undefine the raid rank to allow the configuration of larger capacity volumes.
5. Reassociate the PAVs.
6. Vary the base address range online.
7. Issue Devserv (DS QP,xxxx,nnnn) using the base addresses to confirm that the
8. Restore the data that you offloaded.

Increasing the number of 3390s formatted within an LSS

Use this process to increase the number of 3390s that are formatted within an LSS.
To increase the number of 3390s that are formatted within an LSS, perform the
following:
1. Define an input/output definition file (IODF) using HCD with the desired device
2. Remove the parallel access volumes (PAVs) using the DS8000 CLI.
3. Issue Devserv (DS QP,xxxx,nnnn) to the alias addresses to initiate an I/O
4. Activate a new IODF by either performing an IPL or by dynamically activating
5. Add new 3390 volumes to the LCU.
6. Assign new PAVs.

Copy Services

This topic provides overviews of the different functions of Copy Services, including
the benefits of using Copy Services for disaster recovery.

Copy Services overview

Copy Services is a collection of functions that provide disaster recovery, data
migration, and data duplication functions. Copy Services runs on the IBM
TotalStorage DS8000 storage unit and supports open systems and zSeries
environments.
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modified.
volumes (PAVs) to become unbound.
are unbound.
aliases are bound.
addresses.
operation.
Note: Messages "IOS017I ALIAS DEVICE adev IS UNBOUND" and "IOS001E
xxxx, INOPERATIVE PATH" are issued from all the alias addresses.
These messages are normal and are not cause for concern.
the new IODF.
Attention: Ensure that there is sufficient memory in the hardware storage
area to store the new configuration.