Talk:Fusion Drive

Contested deletion
This page is not unambiguously promotional, because... this is a wholly new technology that is different from any similar ones existing. Similar ones are Hybrid drive that sticks together SSDs and hard drives, but the SSDs perform caching. Apple's invention is different in that it extends hard drive capacity, performs faster reads for frequently used applications and provides a writing buffer. These differences in implementation is enough to differentiate it significantly from existing technology, and enough justification for creating a wikipedia page. N3m6 (talk)


 * This page is not unambiguously promotional, because... FUSION DRIVE is a new technology - Instead the page should be updated with more information about how it works - It might be company specific but you have a page for 'hoover' --90.206.206.186 (talk) 14:18, 24 October 2012 (UTC)

SRT
This is NOT SRT. Also whoever wrote this article must be chinese or something. 3&#124;9&#124;3&#124;0&#124;K (talk) 14:28, 25 October 2012 (UTC)

See Hybrid Drive
IMHO, Apple has developed a proprietary version of a technology that has also been developed by several other vendors. See http://en.wikipedia.org/wiki/Hybrid_drive. A more detailed comparison of advantages and disadvantages as well as what makes it unique needs to be provided, demonstrating that they've accomplished something that the other vendors can't do. It's certainly NOT a wholly new technology. For example,does the firmware/software differentiate between data that's repeatedly read, making good use of the SSD portion, and data that repeatedly updated, tending to wear out the SSD? — Preceding unsigned comment added by 208.127.151.91 (talk) 04:31, 6 April 2013 (UTC)

System design insights
This section claims that work at OSU influenced the technology. The only sources of this section are OSU's Comp Sci/Eng department website which quotes an unnamed source at Apple and the paper itself. This needs secondary sources to stay in the article. --Jtalledo (talk) 13:49, 16 April 2013 (UTC)
 * Someone added some secondary sources, but these do not directly back up the claim that the technology was explicitly influenced by the OSU paper. --Jtalledo (talk) 15:29, 16 April 2013 (UTC)
 * And the IP edit which added the OSU claims removed some well-referenced ones about erratic performance. Adding them back momentarily. --Elvey (talk) 04:09, 5 May 2014 (UTC)

Comparison with Hybrid drives
I will say that it sounds like a hybrid drive at first read but further down it appears to be part of the file system which manages the the data on both the SSD and the spinning disk. Can someone add a section outlining the differences between this technology and a hybrid drive? 47.23.29.18 (talk) 20:51, 28 July 2014 (UTC)
 * After giving it some thought this is what the L2ARC + ZiL does on ZFS. So this is a software addition to the file system and/or OS and is not a buffer like the hybrid disk. 47.23.29.18 (talk) 16:50, 31 July 2014 (UTC)

"Report?"
"There is a report that Fusion Drive does not work as advertised - that a user experienced that very frequently accessed large file was not migrated to the flash drive at a speed acceptable to him."

Umm... this is not a "report." This is basically an authorless entry on a comment board/blog site. — Preceding unsigned comment added by 76.100.185.254 (talk) 22:08, 26 October 2014 (UTC)

Unclear about which design consideration(s) was used.
In the "Design" section, this phrase (see bolded text) is unclear:

. . . According to the paper,[5] this hybrid storage system unifies a high-speed SSD and a large-capacity hard drive with several design considerations of which one has been used in The Fusion Drive.


 * 1) The SSD and the hard drive are logically merged into a single block device managed by the operating system, which is independent of file systems and requires no changes to applications.
 * 2) A portion of SSD space is used as a write-back buffer to absorb incoming write traffic, which hides perceivable latencies and boosts write performance.
 * 3) More frequently accessed data is stored on the SSD and the larger, less frequently accessed data stored on the HDD.
 * 4) Data movement is based on access patterns: if data has been on the HDD and suddenly becomes frequently accessed, it will usually get moved to the SSD by the program controlling the Fusion Drive. During idle periods, data is adaptively migrated to the most suitable device to provide sustained data processing performance for users.

What does "one" refer to? Design consideration #1 on the list? Or one of the four design considerations on the list (which of the four is unknown)? Or?

KS on Wikipedia (talk) 17:51, 21 September 2019 (UTC)