Excuse me, but it seems you may missed that Hard Disk Sentinel already supports SAS hard disks (and SCSI hard disks) for over 10 years.
Hard Disk Sentinel can properly detect, collect and display _complete_ self-monitoring S.M.A.R.T. information, including temperature, health, lifetime status, statistics about SAS hard disks too. Plus even wearout and further details of SAS SSDs too.
Hard Disk Sentinel is able to run hard disk tests generally on SAS drives (may be limited by some controllers, but generally this is possible with no problems).
Hard Disk Sentinel can do this with both standalone non-RAID configuration (using SAS HBAs) and also in SAS RAID configurations too with most SAS RAID controllers eg. with Adaptec, Intel, LSI, IBM, Lenovo, Dell, HighPoint, Areca, ATTO, Promise, 3ware....I wonder why/how it missed if you were looking for disk monitoring / diagnosing software - as the above all are possible by Hard Disk Sentinel for many years.
I thought this is well documented, for example on the following locations:
1) If you check the Compatibility page (Support -> Compatibility -> Hard Disk Controllers):
you can see how many SAS RAID controllers (generally all major manufacturers) listed as "Provides details about all SATA and SAS hard disks"
2) If you look the updates of generally ANY version of Hard Disk Sentinel, you can notice that at least one SAS RAID controller mentioned with updates.
For example the latest version:
"added support of Lenovo 530-8I RAID adapter: detect complete S.M.A.R.T. status of SATA/SAS hard disk drives configured as RAID "
"completely redesigned HighPoint SATA/SAS RAID controller support: better detection of RAID array configuration, logical/physical disk drives, improved status detection and S.M.A.R.T. reporting with HighPoint SATA/SAS RAID controllers "
3) I can also mention the system requirements page
which describes that SAS drives are also supported.
Alternatively if you're are looking for Linux, then why did not check the Linux page:
which also supports SAS drives generally (not in all RAID configurations, but generally with HBAs should be fine)
Excuse me, I do not really know what/where you were looking, but I'm afraid those were WRONG places - as everything you wrote are ALL included in Hard Disk Sentinel for very long time.
I'm even more shocked that nobody you asked found any of the above information yet in years ?