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You're making a lot of noise for nothing.

The Firecuda 1 TB and 2 TB drives had basically  8 GB of MLC memory which was used to cache the most often accessed stuff from the drive - it's nothing smart about, just counts which sectors were read most often and keeps a copy of those into that 8 GB of MLC memory.

 

It's not even giving you faster speeds... the maximum transfer speeds of those Firecuda drives was 210 MB/s ... the average speed across the platter was 156 MB/s .... and the maximum transfer speed when reading from that 8 GB MLC memory was 190 MB/s

 

The new drive may be without that flash memory, but may be made with newer denser platters, allowing for higher transfer speeds.

 

They don't make bigger capacity drives with flash memory because it's basically as I explained, a gimmick, a marketing bit ... in real world that 8 GB of memory doesn't help with anything.

For example, let's say they come up with a 8 TB drive with 64 GB of flash memory (8 GB for each TB) and you play a game like Tomb Raider a couple days... the drive would stupidly see that you access those game files of tomb raider and fill the 64 GB of flash memory with tomb raider, so the third day when you start a new game, the cache is pointless, because it's full with stuff you don't care about. 

 

ps according to datasheet the 8 TB model ST8000DM004 is a bit slower, with a maximum sustained transfer speed of 190 MB/s , but that can be explained by the fact it has more platters and heads (the firecuda had at most 2 platters and 4 heads), the 8 TB probably has 4-5 platters.

On the other hand, it's rated much better at error correction/recovery and load/unload cycles.

 

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