Skip to main content

Sandisk, the New Cloud Storage God with ExtremeFFS?

This battleground is getting hotter and hotter. Storage vendor SanDisk unveils its secret juice of ExtremeFFS.

El Reg reporting:

The flash is multi-threaded, incorporating a non-blocking architecture, so that the 4 to 10 channels from the controller to the NAND chips can be doing different things simultaneously. They can be used for reading, writing or garbage collection.

Think of garbage collection as being akin to checking the bookshelf and removing unwanted books thus creating empty space. Or think of the Wallace and Grommit cartoon where new railway track is continuously being laid down in front of a speeding locomotive. That's what the garbage collection does; create fresh track for the speeding (writing) locomotive by pulling up used track from behind the train.

So there are always, or should always be, empty pages for small random writes to be written into quickly without having to do an erase before the write. That's been done already in the background. Without this page-based algorithm every random write would need a block-level operation and take 100 milliseconds instead of, for example, one.

In effect, SanDisk has accelerated random writes by avoiding the need to erase flash for the write data before writing it.

Sequential writes are not accelerated because they operate at block level already as the files are typically large, images from digital cameras, etc.

SanDisk has also added a process whereby pages that are often accessed sequentially are placed contiguously so that their access is speeded up.

The net effect of ExtremeFFS according to SanDisk is that SSDs are now much more suitable for Windows use because the thousands and thousands of small writes, sub-block size, that Windows makes are accelerated through the new page-level algorithm. This should show up as greatly improved benchmarks for Windows SSD-using systems



Popular posts from this blog

DeepLearningTrucker Part 1

Avastu Blog is migrating to; 1st Jan 2009 live


I will send out emails personally to those who are using my link(s) on their sites.

Thanks much for your co-operation and hope you enjoy the new site and its cool new features :-)

Not like the site is unlive or something..on the contrary, its beginning to get a lot of attention already. Well most of the work is done, you don't have to worry about anything though:

What won't change

Links/Referrals: I will be redirecting the links (all links which you may have cross-posted) to - so you don't have to do anything in all your posts and links. Although, I would urge however that you do change the permalinks, especially on your blogs etc yourselfThis blog is not going away anywhere but within a few months, I will consider discontinuing its usage. I won't obviously do …

Cloud Security: Eliminate humans from the "Information Supply Chain on the Web"

My upcoming article, part - 3 data center predictions for 2009, has a slideshot talking about the transition from the current age to the cloud computing age to eventually the ideation age- the age where you will have clouds that will emote but they will have no internal employees.

Biggest management disasters occur because internal folks are making a mess of the playground.

Om's blog is carrying an article about Cloud security and it is rather direct but also makes a lot of sense:

I don’t believe that clouds themselves will cause the security breaches and data theft they anticipate; in many ways, clouds will result in better security. Here’s why: Fewer humans –Most computer breaches are the result of human error; only 20-40 percent stem from technical malfunctions. Cloud operators that want to be profitable take humans out of the loop whenever possible.Better tools – Clouds can afford high-end data protection and security monitoring tools, as well as the experts to run them. I trust…