Abbreviations If you are frequently confronted with decisions regarding abbreviations, get hold of a copy of either The Chicago Manual of Style or The Gregg Reference Manual. Both these books contain extensive chapters on proper form in using abbreviations, as well as the possessive and plural forms of abbreviations. The plural of Mr. Carter, Lincoln, and Ford.
Redlinked articles from this article's page, to create at a future point in time. Cheers, -- Cirt talk According to the formula in the article itself, that would mean that the drive stores only half of the bytes given to it by the operation system.
In other worse, according to the formula in the article, the drive is losing half the information which clearly is not a good feature. The claim is deceptive if it is done by using compression since compression is a concept that is orthogonal to write amplification and should not be counted when calculating write amplification.
The links given on this SandForce commercial don't writing amplification mention the word "amplification" at all, so there needs to be real references instead.
Wikipedia should not be a commercial for SandForce and if we are going to talk about write amplification levels below 1. By the definition of write amplification in the article, the claim makes no sense other than as a claim that a drive is losing information.
OK, so the first reference does talk about a 0. The direct link is http: However, that page merely documents that SandForce claims to have a 0. The speculation is indeed that there must be compression writing amplification on.
Since there is no linked hard information about what the claimed 0. Both Intel and SandForce make claims about write amplification. Are you saying one is more relevant than the other?
I see in your follow up edit you realized the source referenced had more than one page and you now understand how a drive can get a write amplification below 1 and you no longer feel it is deceptive. Since many online articles will appear on multiple URLs, there is no requirement to explicitly state what page of an article the reference is made unless it is a particularly large article.
I'm sure if we think it is confusing we can update the link to be more specific. Your follow on comment says the source speculates as to how SandForce might be achieving the reduced write amplification.
I agree it is. The paragraph you are referencing in the article is citing what product claims companies are making. They are fully sourced so I don't think they would be considered meaningless statements. SSDs with flash memory must do everything possible to reduce the number of times they write and rewrite data to the SSD.
During garbage collection and wear leveling the SSD will write data more times than the host requested. This gives rise to the "amplification" of those writes. An SSD that can do things to reduce the number of time it writes data to the flash or how much data it writes to the flash would be better because it will enable the flash to "last longer" and if it is writing less to the drive initially then it gets done writing data sooner than other drives.
That would give that SSD a faster write time than any other drive. Last time I checked third party reviews of the SandForce drives were showing actual performance tests which are much higher than many other drives.
I don't know of any simple way to be faster than other SSDs than to write less data, which would be the result with a lower write amplification. Since this article is all about write amplification I think any information related to that subject is likely relevant.
Untilit was assumed that write amplification could not drop below one, but that year SandForce made the claim they had a write amplification of 0.
I should have simply deleted this, but I already wrote the edit summary for the article edit -- Tomdo08 talk Your additions appear to violate the WP: Your modification to the Product statements section appear to be your opinion without any source reference and are appear to me as being worded in a controversial and non-encyclopedic manner.
You said there had already been some discussion about this in the section you mentioned above, but I only see one unregistered user made some opinionated statements as well.Writing to non-sequential LBAs will have the greatest impact on write amplification Toggle Negative (bad) Data compression which includes data deduplication: Write amplification goes down and SSD speed goes up when data compression and deduplication eliminates more redundant data.
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