Overland Storage REO 9000 setup guide Sharing Access to a REO Between Multiple Systems

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APPENDIX

Sharing Access to a REO 9000

Between Multiple Systems

The ShareDevice feature lets you share a single disk (physical or virtual) with more than one initiator. You can use this feature with any combination of iSCSI or FC initiator connections. However, only one initiator can access a single disk (physical or virtual) at a time.

Note: The ShareDevice feature is currently only available on Windows- based operating systems and is not supported for tape emulation. It also requires that the size of the device being shared is 400 GB or smaller.

For Windows-based initiators, the product includes a set of scripts that helps you automate the process of sharing the disks.

„Ovlndstart.exe. You can insert this file into the pre-processing script of the backup application to suspend operation of the backup job until the REO Appliance is ready (not in use by another server). If your pre- processing utilizes a script or batch file, make ovlndstart.exe the first executable line in the file.

„Ovlndstop.exe. You can insert this file into the post-processing script of the backup application to flush all data from cache and then relinquish control of the REO Appliance. If your post-processing utilizes a script or batch file, make ovlndstop.exe the first executable line in the file.

Important: If you do not use the scripts, you might experience errors (for example, “Disk not ready” or “Backup device not ready”) when an initiator attempts to access a disk that is currently being controlled by another initiator.

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