Today I finally made the jump and gave my 8 year old but still fantastic laptop (a Toshiba A300-1M9, it has more stuff on it than modern laptops!) a long overdue upgrade. Nothing as fancy as what’s in the article, sadly, 256G was all I could afford. I received the SSD, unpacked it, and was already flummoxed that this little thing, weighing nothing, is able to pack so much data and can work at such a high speed.
To satisfy my curiosity I copied a 10GB ccache volume from the old disk to a zram block device on my desktop, and from there to the SSD. Took 30 seconds exactly which is just, I have to say the word, amazing.
On one hand it’s money well spent. But on the other hand, the price for these things - mine costed €80 - seems to be artificially high. Why oh why do they have to be so expensive? And now this, 15 TB, on a 2.5" device with even higher transfer speeds, too! Holy mackerel!
Sadly, Samsung said nothing about the price in the article. But it must be unaffordable. Or will developments like these drop the price for lower size such as mine.
Whatever the case may be, 15TB on 2.5" seems incredible. Where does it end, i.e. how much is the theoretical maximum for a 2.5" drive?
The price is high for a reason - there is massive demand. As popular as SSDs for laptops etc are, something like 96% of the NAND produced is consumed by cellphones.
SSD prices are coming down steadily too - every year there is improvement in the fabrication process (50nm -> 30nm -> 21nm etc) which means better density/dollar, although we’re hitting the limits of that now. There are also technology improvements along the way, like Samsung’s V-NAND (3-D stacked NAND) which is what makes this 15TB drive possible. The same kind of flash (48-layer V-NAND) is used in this 2TB USB3 SSD
I’d expect the price for that 15TB drive to be somewhere between US$0.50 and US$1/GB (so, $8K -> $15K, at a guess), although a SAS SSD like this one usually commands a premium over SATA SSDs, so the upper end of that range is more likely
On the flip side, in terms of IOPs, you could replace an entire disk shelf of the fastest spinning drives with one of these, and still have spare capacity. For some parts of the industry, this is exactly what they’ve been waiting for: an extremely high capacity drive that will sustain 3 complete drive writes per day.
I don’t know, but I’m guessing the tradeoff with capacity is how reliably you can get the data out. FS’s like ZFS ans BTRFS might be required to use these larger capacity drives just because they are more likely to corrupt data (I don’t know if they are, but seems likely, at least now).