andrewhake
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Those are the WD 1TB 2.5" drives and they are 12mm thick. They work in the RED Station, as shown by Jarred in another thread. I said they work in my post above, but it looks like it was difficult to understand that and Deanan subsequently pointed out as well that they fit.
The new Seagate 1TB 2.5" Enterprise Class (Constellation.2 series) will be 14.8mm thick. I don't know if they will fit in the RED Station or not.
Doesn't matter if the drives are 5400rpm or 7200rpm... 2.5" mechanical HDD's are going to be a bottleneck if that is what you are offloading to directly. Also rotational speed is not the only factor in HDD performance -- there's platter size, areal density, number of heads, etc.. 2.5" HDD's are typically slower than their 3.5" counterparts due to their platter size, fewer heads, etc.. The SSD mags can unload at about 250MB/s or so they say. The fastest 2.5" HDDs write at about an average 60MB/s. You do the math... You will want a storage system or RAID that can sustain 300MB/s or better if you want to offload the SSD mags at maximum speed. At maximum speed, we should theoretically be able to unload a completely full 256GB SSD mag in about 18 minutes. If you're dumping it to a 500GB WD Black 2.5" 7200rpm HDD that can write at an average 65MB/s, it's going to take about 80 minutes.
Not a dramatic difference, but a Hitachi Travelstar 7K500 averages 85MB/s pretty handily. As soon as SSDs hit the right price point, none of that really matters.