device offline error, dev sdg, sector 7814036992 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 Buffer I/O error on dev sdg1, logical block 3907017475, async page read Buffer I/O error on dev sdg1, logical block 3907017474, async page read Buffer I/O error on dev sdg1, logical block 3907017473, async page read

Buffer I/O error on dev sdg1, logical block 3907017472, async page read EXT4-fs (sdg1): unable to read superblock device offline error, dev sdg, sector 7814037160 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 device offline error, dev sdg, sector 7814036992 op 0x0:(READ) flags 0x0 phys_seg 4 prio class 0 device offline error, dev sdg, sector 2050 op 0x0:(READ) flags 0x1000 phys_seg 1 prio class 0 Buffer I/O error on dev sdg, logical block 1, async page read device offline error, dev sdg, sector 8 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 The T610 backplane on it's own has no problems, but when I boot up with drives connected to the 3rd party backplane I get errors: sd 8:0:2:0: Power-on or device reset occurred Port B corresponds to bays 4-7 and now have nothing connected to them. The T610 backplane with the 8 drives is connected to the PERC H200 (LSI SAS2008) with both SAS cables and the 3rd party backplane is connected to the integrated PERC H710 (LSI SAS2308) with one SAS cable, the other 710 cable is connected to the regular r620 backplane on port B while port A is connected to the mainboard AHCI SAS connector port. Well I decided to make accessing the inside of the server a little easier and moved the drives to the other backplanes so they're not on top of the case when I slide it out.

So if you remember from my gallery post of my setup, I had 4 3.5' drives connected via extenders to drive bays 4-7 on the front of my r620, but I had an empty bay on the T610 backplane I was using for the rest of the drives and a completely empty 4 bay backplane next to it.

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