Last week I migrated both of my primary work computers, my desktop and my notebook, to SandForce based SSDs. My desktop now uses an OCZ Vertex 2 based on the SandForce SF-1200 with OCZ’s special sauce firmware. My notebook uses Corsair’s Force F100, also based on the SF-1200 but offering equal performance to the Vertex 2.
Clearly 100GB isn’t enough space for everything I have, so on my desktop I have a pair of 1TB drives in RAID-1. This is where I store all of my pictures, music and some of my movies. Automatic backups happen to a separate 2TB networked drive.
I’ve got a separate file server that feeds the rest of my home and office with a 3TB RAID-5 array. The last part is really to feed my HTPC and hold all of my benchmarking applications, images and lab files, it’s not necessary otherwise.
My desktop and notebook drives basically house an OS, applications, emails, PDFs, spreadsheets and tons of text files. In other words - highly compressible data.
This is exactly the sort of usage model SandForce was planning on when it designed its DuraWrite technology. If the majority of the data you store can somehow be represented by fewer bits you can solve a lot of the inherent problems with building a high performance SSD.
The SF-1200 and 1500 controllers do just that. The controllers and their associated firmware do whatever it takes to simply write less. In systems like my desktop or notebook, this is very simple. Writing less means the NAND lasts longer, it means that performance remains high for longer and with TRIM you can actually maintain that very high level of performance almost indefinitely.
SandForce’s technology is entirely transparent to the end user. You don’t get any extra capacity, all you get is better performance.
We’ve been looking at SandForce drives from multiple vendors for a while now. If you want the history on the technology look here, and if you want to know how SSDs work in general click here.
As I just mentioned, OCZ’s Vertex 2 ended up in my desktop. That’s the drive we’re looking at today. I moved to SandForce SSDs not because I wanted more performance, but because I wanted to begin long term testing of the mass production firmware on these drives. If I’m going to recommend them, I’m going to use them.
He wasn't referring to all random data, regardless of size, and wasn't referring to reads.
Those are important qualifications. Most mp3 files, and certainly movies fall under the *large* file size.
Additionally, the vast amount of activity with those types of files are going to be reads, not writes.
Sure, your read/write speeds might double or triple, but when it comes to sequential activities, mechanical drives are fast. SSDs excel at random reads/writes, which large files don't have so much of, since it's typically stored in a big chunk, meaning sequential activity, not random. And that's only a copying scenario.
The point at which an SSD becomes useful for such large files will be further away than the point at which it becomes viable for a wider range of files. I would transfer my games to a large SSD long before I would start transferring compressed media files. They can stay on a mechanical for a loooooong time.
When we do finally have large enough drives that they might be the primary storage drives, I doubt Sandforce will necessarily be applying the same ideas, and if they are, they will have progressed significantly from their current state.
Talking about applying a realistic future problem to drives which exist today is meaningless when you consider how much progress has been already made up the this point, and how much progress will be made between now and when the future issue actually becomes a reality (when SSDs are affordable for mass storage purposes).
Further, I should point out that the problem (insofar as it is one) by no means affects only small writes. Large reads, according to the tables, have a 20% perf hit, and large writes have a 43% perf hit.
I don't intend to denigrate SandForce's methods here, by any means. If it helps, it helps, and I'll probably get at least one of these myself. I'm just pointing out that the 'YMMV' caveat is applicable to more people and situations than some people realize.
Can I unplug my sandforce drive and put it in an other computer and read the data without knowing the encryption password?
if yes isn't then the drives native encryption useless?
I wish Crucial fixed their firmware sooner because C300 256GB is about $50 cheaper than F200 or Vertex 2 and faster in all dimensions.
Yeah many small laptops only have 1 hdd/sdd. It's IMHO stupid. would be much better to have space for 2 and just ship an external dvd drive. i mean i need my drive like once every couple month. completely useless if you have to carry it around all the time. (that's one great thing about the hp envy 15) ;)
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