AFTD New Features

Hello peter

Are you referring to the following new feature added in 7.5.3 for AFTD?

Intelligent space management

NetWorker now provides a configurable setting for determining at what level
NetWorker stops writing to an AFTD. This configurable setting can be from 0% to
100%. If the capacity is defined at a value of 100%, the entire disk capacity is used,
though the existing save set cutoff size is still in use.

Hi Peter,

These are the new enhancements for AFTD in NetWorker version 7.5.3

AFTD enhancements — changes to load balancing, device target session values, and intelligent  space management

The following AFTD enhancements have been made to load balancing and the default values for device target sessions.

AFTD Load Balancing
NetWorker volume selection criteria was the same for AFTDs as for tapes, such
that when there were multiple available AFTD volumes belonging to the same
pool fitting the selection criteria (pool settings), NetWorker would select a volume
based on label time. However, selecting a volume by label time is unnecessary for
AFTDs, and results in the first AFTD being overused while others are underused.

The load-balancing scenario for AFTDs has been changed to properly utilize
multiple LUNs for improved performance and utilization. Now, among all
volumes that fit the selection criteria (pool settings), for the first save set
NetWorker chooses the AFTD with the lowest used space, and then joins sessions
based on device target sessions. For each AFTD thereafter, the same rule applies.

Target sessions and max sessions values for AFTDs
Previously, the target session default values for AFTDs were 4 for device target
sessions and 512 for device max sessions. However, such values can lead to high
concurrencies, resulting in disk thrashing.
The Device target session value has been changed from the default of 4 to 1 for
AFTDs, and device max sessions for AFTDs has been reduced from 512 to 32.

Intelligent space management
NetWorker now provides a configurable setting for determining at what level
NetWorker stops writing to an AFTD. This configurable setting can be from 0% to
100%.  If the capacity is defined at a value of 100%, the entire disk capacity is used,
though the existing save set cutoff size is still in use.

Thanks,

Ahmed Bahaa

Thank all for answer.

but I'm looking for real experience with these new features.

Peter