OCZ Vertex versus Colossus

[Juddog]

Which would make a better boot volume, given that each drive in question is 120 GB?

 

[corkyg]

The Vertex is 2.5" - the COlossus 3.5" Both have an excellent 1.5 million hour mean time before failure (MTBF). Colossus is about $80 to $100 more. If cost is not a factor, Colossus has a better form factor for a desktop internal drive. Vertex also fits a laptop - so has greater flexibility for use. With the same capacity in a larger case, Colossus might run a bit cooler.

 

[schenley101]

Isn't the colossus just two vertexes in raid0 is the same package? If so, I would think that the colossus should be faster, but I think in real world performance you won't see much of difference between the two.

 

[Juddog]

Ok going with the Vertex then.

 

[taltamir]

The Vertex is 2.5" - the COlossus 3.5" Both have an excellent 1.5 million hour mean time before failure (MTBF).

1.5 million hours mean (Average) time before/between failure/s * 1day/24hours * 1 year/365 days = 171.2 years (@24/7/365 operation) MTBF...

Note that this is the SAME value as most spindle HDDs... And if you believe that I have a bridge to sell you.

 

[erdemali]

1.5 million hours mean (Average) time before/between failure/s * 1day/24hours * 1 year/365 days = 171.2 years (@24/7/365 operation) MTBF...

Note that this is the SAME value as most spindle HDDs... And if you believe that I have a bridge to sell you.

Taltamir, MTBF is used as a measure of reliability. Probably they took ~95% percentile in normal distribution. That doesn't mean they will last as long. They are not measuring lifespan. it is a possibility of a failure rate.

 

[taltamir]

Taltamir, MTBF is used as a measure of reliability. Probably they took ~95% percentile in normal distribution. That doesn't mean they will last as long. They are not measuring lifespan. it is a possibility of a failure rate.

I know exactly how they test MTBF and what it tests mister. So can the condescending.

 

[erdemali]

I know exactly how they test MTBF and what it tests mister. So can the condescending.

I didn't say you don't know how they test it or whatever.
that is just not the lifespan.
If they sell 1.5M in an hour, about one may fail out of the lot.
I just wanted to clear it out, I am not trying anything else.

 

[taltamir]

I didn't say you don't know how they test it or whatever.
that is just not the lifespan.
If they sell 1.5M in an hour, about one may fail out of the lot.
I just wanted to clear it out, I am not trying anything else.

That is even assuming that they tested that... they are usually just extrapolating, saying drive X is similar to drive Y therefore they have same reliability... there is also rounding, the fact that there is no independent testing, etc etc.

And a "how many drives fail within an hour" measurement is:
1. highly malleable (they can make it say what they want by altering the test slightly)
2. worthless in terms of reliability... all it tells you is how many units are defective off the production line. (because only a unit that is defective off the production line would fail in an hour).

 

[erdemali]

That is even assuming that they tested that... they are usually just extrapolating, saying drive X is similar to drive Y therefore they have same reliability... there is also rounding, the fact that there is no independent testing, etc etc.

And a "how many drives fail within an hour" measurement is:
1. highly malleable (they can make it say what they want by altering the test slightly)
2. worthless in terms of reliability... all it tells you is how many units are defective off the production line. (because only a unit that is defective off the production line would fail in an hour).

True true it is just extrapolation or regression analysis that is.
I was not talking about the reliability of the info or how true the information they supply to their customers. And even fooling customers giving out such numbers they don't mean anything to most.

 

[taltamir]

True true it is just extrapolation or regression analysis that is.
I was not talking about the reliability of the info or how true the information they supply to their customers. And even fooling customers giving out such numbers they don't mean anything to most.

True. Seems we are on the same page here.

 

[erdemali]

True. Seems we are on the same page here.

I agree with most of the things you said but
That's not a measure of lifespan. That's all

 

[taltamir]

sure. I guess I am pretty defensive about MTBF, everyone time I tell people it is a BS measurement people come and tell me that I simply do not understand it. Then follow to describe and explain it in detail... all of which I know and all of which doesn't change it being misleading marketing drivel.

I would go so far as to say the MTBF is not a meaningful measurement to anyone. I can't think of a single customer type that would find useful information in MTBF measurements given by HDD makers.

 

[erdemali]

sure. I guess I am pretty defensive about MTBF, everyone time I tell people it is a BS measurement people come and tell me that I simply do not understand it. Then follow to describe and explain it in detail... all of which I know and all of which doesn't change it being misleading marketing drivel.

I would go so far as to say the MTBF is not a meaningful measurement to anyone. I can't think of a single customer type that would find useful information in MTBF measurements given by HDD makers.

No argue on this at all

 

[corkyg]

Great! Now, instead of hijacking the thread, how about answering OP's question?

 

[taltamir]

Fair enough.

Which would make a better boot volume, given that each drive in question is 120 GB?

The cheaper one.
Given the same price, the colossus, because the colossus uses dual or even quad indilinx controllers in parallel, while the vertex uses only one indilinx controller. As a result the colossus is much faster.

 

[WoodButcher]

MTBF is used as a measure of reliability. Probably they took ~95% percentile in normal distribution. That doesn't mean they will last as long. They are not measuring lifespan. it is a possibility of a failure rate.

MTBF = 2 days after the warranty expires or immediatly after you fail to register the product, whichever comes first!:sneaky:

 

[rgallant]

-I would say MTBF 1.5 mil is to mean,
-if they sell 1.5 mil. of drives they should get 1 dead drive \ rma per hour , 24 per day , 168 per week
8736 a year until the warranty expires on them all lol

 

[erdemali]

-I would say MTBF 1.5 mil is to mean,
-if they sell 1.5 mil. of drives they should get 1 dead drive \ rma per hour , 24 per day , 168 per week
8736 a year until the warranty expires on them all lol

You would be 100% right in your calculations, IFF they could sell 1.5m/hr, 36M/day, 252M/week and ~13 billion per year

 

[corkyg]

I gather then, that you recommend he select the Vertex?

 

[kevinqian]

didn't the OP already make the decision on the 4th post of this thread and here we are circle jerking.

 

[taltamir]

I gather then, that you recommend he select the Vertex?

for the same price, I recommend the colossus.
if the vertex is cheaper, then I recommend the vertex.

 

[vanilla guerilla]

everything they tell us is just an outright lie, designed to extract as much money from us as possible before ozc disappears and sneaks away into the night without letting us know that they have changed their phone number.