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SSD and "storage mode"?

post #1 of 12
Thread Starter 
So I've been reading about SSDs, in particular the PX-M5 Pro series. I've seen it mentioned several times now, but can't really find a topic on it. What are people referring to when they say "storage mode" ? If you read the comments in the forum below you'll see its mentioned.

http://www.xtremesystems.org/forums/showthread.php?282319-Plextor-M5-Pro-an-other-step-forward

I've seen storage mode mentioned in several other places, but couldn't find it to link to. But anyone know what this means?
post #2 of 12
The distinction between Performance Mode and Storage Mode appears to be unique to the OCZ Vertex 4. This SSD uses a controller made by Indilinx, a company which OCZ recently purchased, so I expect that Indilinx controllers will only be seen in OCZ drives from now on.

From what I understand, the Vertex 4 switches to Storage Mode when a certain percentage of the drive is in use (currently 50% but that threshold could change in future firmware releases). Once in Storage Mode, sequential write performance decreases. It appears to be an underhanded way of boosting performance specs, given that most SSDs will be more than half full in real-world use but mostly empty during benchmarks run by review sites.
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post #3 of 12
Quote:
Originally Posted by Kota View Post

The distinction between Performance Mode and Storage Mode appears to be unique to the OCZ Vertex 4. This SSD uses a controller made by Indilinx, a company which OCZ recently purchased, so I expect that Indilinx controllers will only be seen in OCZ drives from now on.

From what I understand, the Vertex 4 switches to Storage Mode when a certain percentage of the drive is in use (currently 50% but that threshold could change in future firmware releases). Once in Storage Mode, sequential write performance decreases. It appears to be an underhanded way of boosting performance specs, given that most SSDs will be more than half full in real-world use but mostly empty during benchmarks run by review sites.
Actually the V4 controller is not Indilinx, it is the same Marvell controller as the M5 Pro. However, the V4 has a completely different Indilinx firmware.
post #4 of 12
Quote:
Originally Posted by Sean Webster View Post

Actually the V4 controller is not Indilinx, it is the same Marvell controller as the M5 Pro. However, the V4 has a completely different Indilinx firmware.

Thanks for the clarification on the controller used in the V4. I guess that's why it's Indilinx "infused" and not "powered." The switching between Performance Mode and Storage Mode is unique to the Indilinx firmware on the V4 at this time, correct?
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post #5 of 12
So what's the advantage of "storage mode"? Is it just a clever way of saying that the SSD will not perform as well in a "dirty" state? Also, do other SSD manufacturers have a feature similar to Plextor's TrueSpeed?

BA
post #6 of 12
Quote:
Originally Posted by Sean Webster View Post

Actually the V4 controller is not Indilinx, it is the same Marvell controller as the M5 Pro. However, the V4 has a completely different Indilinx firmware.

I thought that's been assumed but not proven (about it using the new Marvell Controller)..?
Quote:
Originally Posted by Bitaddict View Post

So what's the advantage of "storage mode"? Is it just a clever way of saying that the SSD will not perform as well in a "dirty" state? Also, do other SSD manufacturers have a feature similar to Plextor's TrueSpeed?
BA

There's no advantage - it's what's advertised: it slows down. I'm sure they may spit out stuff like life-time and wear-rate but nobody buying a 128GB / 256GB SSD today expects to be using it few years down the road - let alone 5.
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post #7 of 12
Quote:
Originally Posted by Kota View Post

Thanks for the clarification on the controller used in the V4. I guess that's why it's Indilinx "infused" and not "powered." The switching between Performance Mode and Storage Mode is unique to the Indilinx firmware on the V4 at this time, correct?
I believe so, however I am not sure.
Quote:
Originally Posted by Bitaddict View Post

So what's the advantage of "storage mode"? Is it just a clever way of saying that the SSD will not perform as well in a "dirty" state?
No idea if there is one really.
Quote:
Also, do other SSD manufacturers have a feature similar to Plextor's TrueSpeed?

BA
TrueSpeed is just what Plextor calls their garbage collection coding on their SSDs. All SSDs have garbage collection, however they are programed differently.
Quote:
Originally Posted by error-id10t View Post

Quote:
Originally Posted by Sean Webster View Post

Actually the V4 controller is not Indilinx, it is the same Marvell controller as the M5 Pro. However, the V4 has a completely different Indilinx firmware.

I thought that's been assumed but not proven (about it using the new Marvell Controller)..?
I am 99.999999999999999999999999% sure it is a Marvell with Indilinx firmware.
post #8 of 12
Thread Starter 
*watches the content of the answers fly over his level of understanding* confusedsmiley.png
uh thanks for all the answers, i guess.
Quote:
but nobody buying a 128GB / 256GB SSD today expects to be using it few years down the road - let alone 5.

really? so i shouldn't be expecting a SSD to still be working in 5 years cause I've had plaently of HDD that have worked for at least 7 years. Or did you just mean something better will come along by then replacing SSD?
post #9 of 12
Quote:
Originally Posted by tdg84 View Post

*watches the content of the answers fly over his level of understanding* confusedsmiley.png
uh thanks for all the answers, i guess.

really? so i shouldn't be expecting a SSD to still be working in 5 years cause I've had plaently of HDD that have worked for at least 7 years. Or did you just mean something better will come along by then replacing SSD?

The short of it is: Storage Mode is a negative (performance slows down when the drive is >50% full) but this behavior only applies to the OCZ Vertex 4. The Plextor you're looking at is a great drive and it does not have a Storage Mode.

I don't want to speak for error-id10t, but I think the point he was trying to make about SSD lifespan is that it is finite (limited to a set number of writes to each NAND cell) and the technology is changing so quickly that the 128/256 GB capacities will be considered obsolete in a few years. However, there's no reason why an SSD won't last you 5+ years if you aren't performing tons of writes to it. And that is plenty of space to function as an OS boot drive indefinitely.
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post #10 of 12
Quote:
Originally Posted by Sean Webster View Post

I believe so, however I am not sure.
No idea if there is one really.
TrueSpeed is just what Plextor calls their garbage collection coding on their SSDs. All SSDs have garbage collection, however they are programed differently.
I am 99.999999999999999999999999% sure it is a Marvell with Indilinx firmware.

It's Marvell.. I'm just curious if it's confirmed it's the new Controller, I thought that was still an open question mark.
Quote:
Originally Posted by tdg84 View Post

*watches the content of the answers fly over his level of understanding* confusedsmiley.png
uh thanks for all the answers, i guess.
really? so i shouldn't be expecting a SSD to still be working in 5 years cause I've had plaently of HDD that have worked for at least 7 years. Or did you just mean something better will come along by then replacing SSD?

smile.gif I meant from an average (maybe not) consumer point of view, not expected manufacturer provided warranty point of view. New Controllers come out each year, not all with improvements obviously (ie: anything to do with Seq speeds or high QD speeds you can just ignore) - but in 2 years there will be better SSDs where it matters (access time and QD1 read/write speeds) .. let alone in the next 5 years.
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