the sas cable you have wont work with a sata drive if it is a sas cable - other way around will i think -might be your problem with not seeing a drive???
Actually, there are breakout cables that convert the multi-lane SAS cables into multiple (4 usually) SAS/SATA connectors.
Just note, these cables are not multi-directional. So you can't use a breakout cable to hook up SATA ports to a SAS hookup. You need a reverse breakout cable for that. And the same holds true here.
So adding one more gadget, i just ordered a perc H310 from ebay to give me access to more SATA drives in my dell t20. It seems everywhere i read, this is being discussed with flashing to the LSI 9211 IT mode, mostly though for freenas. I am running a win 2012 r2 essentials and drivepool. Do i gain in reliability or speed in flashing to the IT mode (vs the risks that i goof up while doing all those DOS boots) or should i leave it as it is with the dell firmware?
Does drivepool handle one better than the other? (Dell vs lsi IT)
Somewhere else i read that in this IT mode, drives dont get parked and that could be an issue (i have three HGST drives currently). To avoid it i have to do another bunch of steps to allow that or that i should leave the card in IR mode. Does leaving the dell Perc H310 with the dell firmware keep it in IR mode (i am a newbie, and despite reading the servethehome writeups, i just dont get what the IR mode actually is).
thank you for reading and answering.
IIRC, the Dell PERC card only shows the drives to the host system if you add them to RAID arrays.
This is fine, but it means that you give up SMART data.
However, flashing it to IT mode makes the card a "HBA" card, which means all it does is act as a drive controller, with NO RAID functionality. In most cases, this is what you want with our software.
However, if the Dell PERC does actually let you pass through the drives to the system without adding them to RAID arrays, then there is no need to flash the card.
My IBM ServeRAID M1015 card (which is very similar) has been flashed to IR mode and allows me to create RAID arrays or to pass through the disks. But the Dell PERC may be in "OEM" mode, which is ... the above mode (eg, RAID only, no passthrough).
It's worth testing the drives out, just don't configure ANYTHING.
Additionally, SATA drives work fine on SAS, but not the other way around.