SAS expander backplanes with SATA drives

[Weapon]

I've been looking at Supermicro CSE-846 chassis on eBay and reading posts here on the forums regarding the preferred backplanes. Everyone seems to recommend the BPN-SAS2-846EL1 backplane.

However, I cam across this very old thread on another forum with some discussion about issues using SAS expanders with SATA hard drives. It's my understanding the BPN-SAS2-846EL1 backplane has a built in expander. Does anyone know if this is still an issue? I would assume so as the BPN-SAS2-846EL1 seems to be a very popular choice here, but wanted to check before purchasing. Thanks.

ZFS and SAS expanders with SATA drives a toxic combo?

/dev/dump: Why SAS->SATA is not such a great idea
/dev/dump: Update on SATA Expanders

 

[Rahvin9999]

Long story very short.

SAS1 expanders and SATA drives can give problems.
SAS2 expanders and SATA drives go for it.

BPN-SAS2-846EL1 is a SAS2 backplane so running it with SATA drives is ok.

 

[dragonme]

is the sas expander in the Rackable SE3016 a sas2 expander?

Some reports I have seen they have a 3 or 4tb drive limit?

I plan on driving the enclosure with either a :

LSI 9212-4e4i directly via 8088 cable

or

a intel Intel AXXRMS2AF040 / Intel AXXRMS2AF080 add in raid card (lsi2008 based) to a HP expander that will connect to internal drives and the se3016 though the 8088 cable...

suggestions?