Solaris San Cluster - migrate to Linux.

It should be easy enough to test:

Perform catalog backup to disk on current master server.
Install NBU as clustered master on Linux cluster to same path(s) as original master using same NBU version and patch level. Use same hostname as virtual master name. Ip address can be different.

Do at least one failover and failback to ensure emm entries are correctly updated.
Restore catalog on active node followed by nbemmcmd -updatehost command to update OS. 

See:

Using catalog backup and recovery to transfer NetBackup catalogs between UNIX or Linux master servers as part of a hardware refresh
http://www.symantec.com/docs/TECH77448

Disclaimer:
A very good knowledge of NBU is needed to perform migrations like this.
Trained consultants have a dedicated team of Catalog Manipulation specialists as backup when charging you for assistance.

There are several points in this TN which could lead to support issues if things don't work out (but you will still have the old master!) :

• TECH58358   DOCUMENTATION: Recovering a Master Server at a disaster recovery site from a catalog backup requires the same topology.