Windows Knowledge Base

[DMX]How to find unallocated / unassigned storage devices on a Symmetrix

To show a report of volumes which are not mapped to a front end channel on the Symmetrix:

symdev list -noport

This will display all Volumes that are currently not mapped to any front end channels (SA/FA/SAF)
The output can be limited to only display specific device types. It can also be limited to only show non-BCV volumes.

Examples:

symdev list -noport -R1        //only shows unmapped R1 volumes

symdev list -noport -drv       //only shows drv devices used for Optimizer swaps

symdev list -noport -nobcv     //will omit all BCV volumes from output

Other flags such as -CAP, -cyl, -scsi, -fibre can be passed to the command to further specify the displayed information.
See Solutions Enabler Base Component Product Guide Appendix A for a full list of options or type symdev -h at the command prompt.