any news regarding SATA IV?

pacmac · Tux's lil' helper Joined: 25 Apr 2003 Posts: 89

Hello,

do you know if there are any news regarding SATA IV development? PCIe 4.0 is gonna be out next year, but I didn't read anything about SATA IV.

BR.

asturm · Developer Joined: 05 Apr 2007 Posts: 8935

I don't think SATA is going anywhere. SATA Express was dead on arrival. Even if they double its bandwidth, which was already limiting SSDs at the time it was in production, it would still limit currently available SSDs. It is old tech now, invented for spinning platters.

NeddySeagoon · Posted: Tue Aug 23, 2016 11:10 am Post subject:

pacmac,

SATA has long been fast enough for rotating rust. The problem there has always been the latency with getting to the data on the platter.
Tricks like Native Command Queuing have helped reduce the average latency under some workloads.
Magnetic HDDs are not going to get any faster. They can only compete with SSDs on storage density.

The way ahead for SSDs is probably NVM Express for a year or two anyway.
They will plug into your PCIe 4.0, when you get one.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

Ant P. · Watchman Joined: 18 Apr 2009 Posts: 6920

Agreed with the above, NVMe seems to be the current way to go if you need the absolute fastest storage.

The future looks to be NVRAM that plugs straight into normal DIMM slots - the kernel already has partial support for that.