Submitted by “The Serial ATA International Organization today, made the third-generation SATA interface official. The new interface provides a 6 Gbps high-speed serial data connection between the system and most of today’s data storage devices such as hard drives, solid-state drives, optical drives, and enterprise tape drives. The interface also provides connectivity to external storage devices in its eSATA port variant. It is 100% backwards compatible with devices that support the SATA 150 MB/s and SATA II 300 MB/s standards.”
nice,… but I don’t need it as a simple user until there will be a price drop for SSD with good storage space&speed
IMHO, this is really 1st page news (even more as the current ‘page 2’ is terrible… the old right column listing is way better […and I can’t get it back in the preferences…]… as the collapsed news item instead of the actual different page…)… I/O is the major drawback in PC’s performance. This new standard is a major improvement, specially with SSDs becoming popular in the coming years (and I hope the SATA standard can keep the track of performance, non-standard PCIe SSDs aren’t so fun…).
So, true. They moved it down just so they can justify that big, ugly, so much out of place ad box that made me turn AdBlock back on, in protest.
Go ahead, rate this one down if you want, but I’m not turning AdBlock off until that ad is gone. I’d leave OSnews first.
Don’t misunderstand me, I love this site and although I registered only recently, I’ve been reading it for years now. I’d also like to support it every way I can, but that ad is too intrusive and I cannot tolerate it.
The famous 2 cents.
Given that most HDDs even to this day can barelly fill a portion of SATA 1.0 bandwidth, this is hardly exciting news… wasted capacity if anything.
Wonder when SSD devices will get fast enough and cheap to replace the current crop of HDDs. For most intents and purposes SATA 1.0 is still too fast for most HDDs.
Furthermore, they need to do something about the implementation of the stack. Most manufacturers pump it up to the CPU, which sometimes get taken down to their knees doing large transfers.
The only exciting use I have seen of SATA has been as an interconect for multiple CPUs.
Edited 2009-05-28 03:37 UTC
You can easily saturate SATA-II port using multiplexer and 4 disks. All neatly connected to single eSATA port in motherboard. Increased bandwidth is nice.
BTW, SATA as CPU interconnect? What a mad idea is that, could you provide link?
come on, hypertransport 3.1 is the way to go for disks
Edited 2009-05-28 11:10 UTC
Why on earth would you multiplex multiple disks on a single SATA port?
In any case, I saw the SATA interconnect used by some SUN guys to piece together a mulitprocessor system made of multiple FPGA boards, each running a OpenSPARC instance in their respective FPGA.
Here is the link for the presentation SUN gave us at the RAMP retreat:
https://www.opensparc.net/pubs/preszo/08/ramp_2008_08_final.pdf
(see slide 17)
Suppose I have 4 SATA ports, and each SATA port is 300MBit/sec. What is the full bandwidth? 4 x 300 = 1200MBit/sec? Or can only one drive use the bandwidth and the other drives has to wait until it finishes?
Those as usual, are theoretical peaks for the medium. Once you put the overhead due to stack processing, you start to see significantly lower perfromance figures.
I believe most implementations offer multiple physical SATA ports, which are multiplexed at the physical end of the chipset.
I personally think most of those numbers are bogus. Install 2x 1TB SATA drives in a normal PC, do a full dd from one to the other.. and watch your system come down to a crawl taking a whole day, to do something that under the performance figures quoted by the manufacturers should take a couple of hours tops.
Something stinks to high heavens in the state of the art IO in the PeeCee industry.