The memory you're using is validated for the SR2612UR. I don't see any requirements listed in the Server Configuration Tool for the memory. The S5500UR supports 1333 memory.
With all the memory removed do you get the typical three beep error code?
That's a two 4G stick memory kit, correct? Have you tried a single memory stick to see if the memory is an issue? The minimum memory population possible is one DIMM in slot A1. In this configuration, the system operates in the Independent Channel mode. RAS is not available.
No, this kit is a single 8GB memory stick with Dual Rank.
I do get 3 beeps if memory is removed or if improper ranks installed or if non-ECC memory (desktop memory) is installed. When 3 dims are installed no beeps just stuck on memory test phase (the 0xB9h Diagnostics LEDs stay on).
The front amber light blinks supposedly nothing critical.
I have tried with 1 DIMM on A1 and also 3 on all Blues of the single CPU but no luck. I have removed the second CPU and the second group of DIMMs also emptied (this worked on another system SR1695WB until I upgraded the BIOS).
The CPU is E5645 (PN BX80614E5645).
I have ordered another memory kit of 4GB single rank maybe this may be more recognizable since in 2009 4GB DIMMs were common and this old BIOS may support it.
I am assuming there is no way to allow some kind of basic operation of the system just until we upgrade the BIOS.