Dell NetWorker 19.9 Administration Guide

Setting the block size for a device type

1. Change the block size:

   • On UNIX, change the block size by setting this environment variable to the greatest common value for both systems. For example:

     setenv NSR_DEV_BLOCK_SIZE_MEDIA_TYPE value

     where:

     • MEDIA_TYPE is the backup device type available to the NetWorker server (also found in the Media Type attribute on the General tab of the device’s properties). The media type syntax must be all uppercase, with underscores (_) replacing blank spaces and hyphens. Therefore, a device displayed in the NetWorker software as "8mm Mammoth-2" would be listed as:

       8MM_MAMMOTH_2

     • value must be a multiple of 32 KB, with a minimum value of 32 KB.

   • On Microsoft Windows only, install a later model HBA, or upgrade to drivers that can support up to 128 KB blocks. Windows also accepts the same environment variable format as UNIX to set block size.

2. Restart the NetWorker server in order for changed environment variables to take effect.