HGST Demonstrates Industry's First 12Gb/s SAS SSD

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HGST (formerly Hitachi Global Storage Technologies and now a Western Digital company) today announced the storage industry’s first technology demonstration of a 12 gigabit per second (12Gb/s) SAS solid state drive (SSD), representing the next performance step in the evolution of SAS, the preferred interface technology for enterprise servers and storage solutions. HGST is participating in the 12Gb/s SAS demonstration at the SCSI Trade Association Technology Showcase on May 9, 2012, at the Hyatt Hotel in Santa Clara, Calif.

SAS SSDs and hard disk drives (HDDs), with their rich SCSI heritage, continue to be the building blocks of choice for enterprise and cloud storage. Enabling next-generation storage solutions, 12Gb/s SAS is a broadly supported industry standard as it delivers twice the throughput compared to today’s 6Gb/s SAS solutions, while maintaining established enterprise protocols and attributes. It is also backward compatible with 6Gb/s SAS for investment protection in current SAS infrastructures.
 
SATA + SSD is a dead end. NVM_Express will be the defacto storage for flash memory, tied to the PCIe bus (not PCIe cards) and will present itself to the OS as storage. Intel has drivers for this in the linux 3.0 kernel stack (or at least some branch) and there is a large consortium of companies that want to move SSDs off of SATA.

At some point spinning platters *could* push 300-500MB/sec reads/writes, but we're a long ways from it. Even the fastest SATA drive right now cannot push >200MB/sec read/writes in a single drive configuration.
 
Yep, it clearly means SATA 12Gb/s is soon coming up, but this seems to be a whole new concept:
Do I read correctly that the two 12 Gb/s ports on each drive allow 12 Gb/s read and write, as in one port is dedicated to reading queries, the other to writing?
The article does not say anything about how these two ports work.

This seems a bit too complex and costly for SATA, I assume SATA 12 Gb/s will only have one 12 Gb/s port.
 
stashtv said:
Here's one review from TR:
http://techreport.com/articles.x/22794/3

The latest 10k Raptor isn't pushing 200MB/sec read/writes. Which SATA single drive can push it? Start RAIDing drives and you'll easily push that rate, but I'm looking at pure single drive SATA configs.
Click to expand...
That's what I read in your link: The VelociRaptor 1TB is blown away by the SSDs, whose average sequential read speeds are 2.5 times faster
Of course there's no comparison in speed between HDD and SSD, the latter are superior to any device with mechanical parts, not surprising.
 
stashtv said:
SATA + SSD is a dead end. NVM_Express will be the defacto storage for flash memory, tied to the PCIe bus (not PCIe cards) and will present itself to the OS as storage. Intel has drivers for this in the linux 3.0 kernel stack (or at least some branch) and there is a large consortium of companies that want to move SSDs off of SATA.

At some point spinning platters *could* push 300-500MB/sec reads/writes, but we're a long ways from it. Even the fastest SATA drive right now cannot push >200MB/sec read/writes in a single drive configuration.
Click to expand...

6 G/s is plenty of bandwidth for a single SSD, because

1) Random read/write throughput is far below even 3 G/s
2) If you need huge aggregate sequential speeds (for writing multiple video streams for example), you're gonna want a RAID anyway since single drives don't have the storage capacity you'd want for those kinds of data.
 
Apparently not: One of the enterprise features of today's SAS drives is a second interface port that provides additional bandwidth to the drive.
 
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