When we zoom in at the primary ICs a little, we spot the NAND FLASH storage with each PCB having two SandForce controllers, the latest SF1200 series, stickers are applied here though noting down SF1222.
One SF1200 IC used per FLASH memory partition, so that's four SandForce controllers in total; talk about an expensive solution.
All the way to the middle right, we spot a Pericom PI7C9X130 IC which functions as PCIe 4x link in-between the RAID controller and PCIe bus. The typical usage in this configuration is to bridge legacy 64-bit PCI products to PCI Express systems.
To your upper right, you can spot a small Maxronix MX29LV Series 3 CMOS IC. In the middle, obviously the Silicon image RAID controller, model 3124 SoftRaid 5. Softraid indicated that it will use some CPU cycles for it's operational tasks.
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