Apparently TDP is 30 watts¹, according to the product brief. I would imagine it's a single PCB with flash chips on both sides then thermally bonded to the aluminum chassis. That should keep all chips at approximately the same temperature. On its own it could be easily air cooled, but with 24 in a 2U chassis you'll be having some decently hefty forced air over the drives.

1. For comparison, an HDD usually comes in around ~10 watts

It's not just a single PCB, but a sandwich of several.

The 4th Earl of Sandwich disagrees.

Given the cost of 24 of them, you can probably buy solid silver heatsinks watercooled with tears of sysadmins.

The tears of sysadmins are fairly cheap though.

I was going to say blood of virgins, but tears are probably better heat conductors.

Hey! You leave me out of your twisted fantasy!

I just want....I just want hard drive prices to come back down. *sniffle*