Cabling H310 HBA and CSE-M35TQB (regarding I2C/SGPIO)

[cyruspy]

Hi! , I'm trying to match 2 x PERC H310 HBAs to 3 x Supermicro CSE-M35TQB, which I just received.

 

I bought 2 breakout cables for each HBA but the cages came with one breakout cable that includes 4 SATA ports and a 2x4 PIN connectors on the cage side,  I understand the latter is to control error LEDs.

 

I was expecting to cable them like this:

 

HBA 1:

Ports 1-4 to Cage 1, disks 1-4

Ports 5 to Cage 1, disk 5

Ports 6-8 to Cage 2, disks 1-3

 

HBA 2:

Ports 1-2 to Cage 2, disks 4-5

Ports 3-4 to Cage 3, disks 1-2

Ports 5-7 to Cage 3, disks 3-5

Ports 8, free

 

But now that I got the extra cables, physically I'll be able to connect the extra signaling cable to the cages, but how will the HBAs know which cage to signal when there's a broken disk?

[cyruspy]

No-one used this cage before? 

[Squid]

My understanding is that since unRaid does not leverage hardware raid, the HBA will never signal that a drive is offline.  (could be mistaken and the HBA *may* be smart enough to know that a drive has dropped offline and then signal).  Easy way to test would be to pull the sata / sas cable from the back of the cage and see what happens with the error lights

[cyruspy]

Well that build has been frozen for some years. I would like to restart it.

 

Still have the 3 x CSE-M35TQB cages and 2 x H310.  Also, I plan to get 1 x H220. This will allow me to match 1 cage to 1 HBA, 5 ports per HBA (3 unused ports per HBA).

 

Waiting for an E3-1265L v2 and X9SCM-F. Will kill 3 PCIe slots but SES2 LEDs should work. 

 

Any better ideas?

Edited January 31, 2021 by cyruspy