I was contacted by a representative of Spictera about their SPFS tool for Spectrum Protect. This product allows you to use a local mount on your Linux server as a place to save your backup or application dump that is a direct connection to the IBM Spectrum Protect backend storage. It uses Spectrum Protect API calls and allows you to implement versioning and retention policies just as you would normal file system backups or archives. This product can solve your issues with proprietary applications that IBM does not, and probably never will, support. Now you can backup your MongoDB or SAP HANA a lot easier by using the native backup process built into your application. Currently it only supports the following OS's.
I would assume if it support CentOS x86_64 you should have no trouble with it on Red Hat. I'll let Spictera confirm that though. I've provided a presentation on the product for your review.