Apple is working on a hybrid drive
TweetFollow Us on Twitter

Apple is working on a hybrid drive

A new Apple patent (number 20110238887) has popped up at the US Patent & Trademark Office, showing that Apple is working on a hybrid drive that combines hard disk drive (HDD) and flash memory elements.

Per the patent, a hybrid storage device that includes a hard-disk drive and a flash memory is described. When control logic in the hybrid storage device receives a request from an external device to write a block of data to a logical address in a first portion of an address space that maps to the HDD, the control logic writes the block of data to the HDD.

However, if there is a change in environmental state information of the hybrid storage device during the write operation, the control logic writes at least a portion of the block of data to a logical address for the block of data in a second portion of the address space which maps to the flash memory. Note that the address space may be common to the external device and the hybrid storage device. Khalu Bazzani is the inventor.

Here's Apple's background and summary of the invention: "The present disclosure relates to a hybrid storage device that includes different types of storage media and associated systems. More specifically, the present disclosure relates to a hybrid storage device in which blocks of data are stored in the different types of storage media based on an environmental state of the hybrid drive.

"While hard-disk drives (HDDs) are capable of storing large amounts of data at a low cost per byte, they can be sensitive to environmental conditions. In particular, operation of modern HDDs involves accurately maintaining the vertical and horizontal positions of read and write transducers within a few nanometers of a disk that is spinning at a rotational velocity in excess of 10,000 rpm. In addition, as the aerial density in HDDs increases, the current density in the read transducers increases, and the magnetic volume associated with a bit stored on the disk decreases.

"These design changes increase the sensitivity of HDDs to potential effects associated with ambient temperature and the thermal energy dissipated by HDDs, including: thermal runaway, electro-migration and superparamagnetism.
As a consequence, HDDs are increasingly sensitive to environmental conditions, such as changes in temperature, vibration and acceleration, which can disrupt operation of an HDD, and can result in HDD failure and/or loss of data. In turn, these limitations can adversely impact the performance of systems (such as computer systems) that include HDDs, and can necessitate additional data and storage-device redundancy that can increase the complexity and cost of these systems. Hence, what is needed are a storage device, as well as a system that includes the storage device, which overcome the problems listed above.

"One embodiment of the present disclosure relates to a hybrid storage device that includes: a hard-disk drive (HDD), a flash memory, an interface circuit, and control logic. This control logic receives a request, via the interface circuit, from an external device to write a block of data to the hybrid storage device, where the request includes a logical address for the block of data in a first portion of an address space which maps to the HDD. In response to the request, the control logic writes the block of data to the HDD.

"Furthermore, if there is a change in environmental state information of the hybrid storage device during the write operation, the control logic writes at least a portion of the block of data to a logical address for the block of data in a second portion of the address space which maps to the flash memory. Note that the address space may be common to the external device and the hybrid storage device.

"In some embodiments, the change in the environmental state information is associated with an operating state of the HDD in which failure or shut down of the HDD is to occur during the write operation. For example, the operating state of the HDD may be associated with: a change in an internal temperature of the HDD, acceleration of the HDD, and/or vibration of the HDD. Moreover, during the operating state one or more transducers in the HDD may be parked.

"Additionally, the change in the environmental state information may include detecting an error associated with an operating state of the HDD. For example, the error may indicate that data stored on the HDD is at risk of imminent loss during the write operation.

"In some embodiments, the first portion of the address space and the second portion of the address space are statically allocated. Alternatively, the first portion of the address space or the second portion of the address space can be reallocated when the HDD or the flash memory is reformatted. Furthermore, in some embodiments the first portion of the address space and the second portion of the address space may be dynamically allocated. This dynamic allocation may be based on: characteristics of an activity history of the external device and/or characteristics of an application executing on the external device.

"In some embodiments, if a request is received from the external device to read a block of data from a logical address that maps to the HDD in the hybrid storage device, and the HDD is inoperative due to an environmental condition, the control logic accesses the block of data at a logic address which maps to the flash memory if the block of data is also stored on the flash memory.

"Another embodiment provides a computer system that includes the hybrid storage device.

"Another embodiment provides a method for writing blocks of data to the hybrid storage device. During operation, the control logic receives the request from the external device to write the block of data to the hybrid storage device, where the request includes the logical address for the block of data in the first portion of an address space which maps to the HDD. In response to the request, the control logic writes the block of data to the HDD. Furthermore, if there is a change in the environmental state information of the hybrid storage device during the write operation, the control logic writes at least a portion of the block of data to the logical address for the block of data in the second portion of the address space which maps to the flash memory."

-- Dennis Sellers

 
AAPL
$100.40
Apple Inc.
-0.13
MSFT
$45.10
Microsoft Corpora
-0.23
GOOG
$583.91
Google Inc.
-2.95

MacTech Search:
Community Search:

Software Updates via MacUpdate

Chromium 36.0.1985.143 - Fast and stable...
Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web. FreeSMUG-Free OpenSource Mac User Group build is... Read more
Macgo Blu-ray Player 2.10.6.1691 - Blu-r...
Macgo Mac Blu-ray Player can bring you the most unforgettable Blu-ray experience on your Mac. Overview Macgo Mac Blu-ray Player can satisfy just about every need you could possibly have in a Blu-ray... Read more
Apple Motion 5.1.2 - Create and customiz...
Apple Motion is designed for video editors, Motion 5 lets you customize Final Cut Pro titles, transitions, and effects. Or create your own dazzling animations in 2D or 3D space, with real-time... Read more
A Better Finder Rename 9.39 - File, phot...
A Better Finder Rename is the most complete renaming solution available on the market today. That's why, since 1996, tens of thousands of hobbyists, professionals and businesses depend on A Better... Read more
PopChar X 6.6 - Floating window shows av...
PopChar X helps you get the most out of your font collection. With its crystal-clear interface, PopChar X provides a frustration-free way to access any font's special characters. Expanded... Read more
MacUpdate Desktop 6.0.2 - Install Mac ap...
MacUpdate Desktop 6 brings seamless 1-click installs and version updates to your Mac. With a free MacUpdate account and MacUpdate Desktop 6, Mac users can now install almost any Mac app on macupdate.... Read more
PDFpenPro 6.3.2 - Advanced PDF toolkit f...
PDFpenPro allows users to edit PDF's easily. Add text, images and signatures. Fill out PDF forms. Merge or split PDF documents. Reorder and delete pages. Even correct text and edit graphics! Create... Read more
PDFpen 6.3.2 - Edit and annotate PDFs wi...
PDFpen allows users to easily edit PDF's. Add text, images and signatures. Fill out PDF forms. Merge or split PDF documents. Reorder and delete pages. Even correct text and edit graphics! Features... Read more
OS X Yosemite 10.10 DP6 - Developer Prev...
Note: This is a Developer Preview. You must be a registered Apple Mac Developer to download this update. You can also sign up for the free OS X Beta Program to download and preview public beta... Read more
Flavours 1.1.15 - Create and apply theme...
Flavours is a Mac application that allow users to create, apply and share beautifully designed themes. Classy Give your Mac a gorgeous new look by applying delicious themes! Easy Unleash your... Read more

Latest Forum Discussions

See All

One Tap RPG Review
One Tap RPG Review By Campbell Bird on August 20th, 2014 Our Rating: :: DUNGEON SLIDERUniversal App - Designed for iPhone and iPad This casual arcade game introduces some very light rpg elements into its fantasy-themed pachinko... | Read more »
Goodbye Paywall – Table Tennis Touch Eli...
Goodbye Paywall – Table Tennis Touch Eliminates In-App Purchases Posted by Jessica Fisher on August 20th, 2014 [ permalink ] | Read more »
Go to Bed – An Interview With Touchfight...
Touchfight Games is an exciting new indie studio that was co-formed between game journalist and author Nathan Meunier, artist Leonard Kenyon, and programmer Jon Kenyon. Their debut game Go To Bed will be released this fall, and with all the... | Read more »
Assault Vector Review
Assault Vector Review By Rob Thomas on August 19th, 2014 Our Rating: :: SIMPLE STRATEGYUniversal App - Designed for iPhone and iPad While this hex-based warp ride is fine in theory, Assault Vector is a bit too simple to be... | Read more »
Tom Hanks’ Hanx Writer has Taken the App...
Tom Hanks’ Hanx Writer has Taken the App Store by Storm Posted by Jessica Fisher on August 19th, 2014 [ permalink ] iPad Only App - Designed for the iPad | Read more »
It Came from Canada: Galaxy Dash
With its use of well-established tropes like endless flying and sci-fi space shooting, the upcoming Galaxy Dash: Race to the Outer Run most likely won’t confound expectations. However, with its robust amount of opportunities for fun player... | Read more »
PromptSmart Review
PromptSmart Review By Jennifer Allen on August 19th, 2014 Our Rating: :: SNAPPY SPEECHGIVINGUniversal App - Designed for iPhone and iPad Offering you a teleprompter in your pocket, PromptSmart is immensely helpful for those who do... | Read more »
The Firm (Games)
The Firm 1 Device: iOS iPhone Category: Games Price: $.99, Version: 1 (iTunes) Description: *** LIMITED TIME LAUNCH OFFER -50% ! *** "The Firm is one of those games that looks so easy on the surface, but it's actually like a cerebral... | Read more »
They Need To Be Fed 3 (Games)
They Need To Be Fed 3 1.0.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0.0 (iTunes) Description: 360 degree gravity platforming is back! Run, jump, collect, avoid enemies and feed yourself to the monster at the... | Read more »
Who Wore it Best? Phantom Flower vs. And...
Who Wore it Best? takes a break from all the bloodshed to check out two decidedly tranquil and nature-loving puzzles games: Phantom Flower and And Then it Rained. [ Who Wore it Best? Phantom Flower vs. And Then it Rained is a post from... | Read more »

Price Scanner via MacPrices.net

Best Buy’s College Student Deals: $100 off Ma...
Take an additional $100 off all MacBooks and iMacs, $50 off iPad Airs and iPad minis, at Best Buy Online with their College Students Deals Savings, valid through September 6th. Anyone with a valid .... Read more
MacBook Airs on sale for $100 off MSRP, free...
B&H Photo has three 2014 MacBook Airs on sale for $100 off MSRP. Shipping is free, and B&H charges NY sales tax only. They also include free copies of Parallels Desktop and LoJack for Laptops... Read more
Razer Taipan Mouse For Gamers And Non-Gamers...
If you’re a serious gamer on either Mac or Windows PCs, a serious gaming mouse is a necessity for first-tier performance. However, even if like me you’re not much of a gamer, there’s still a strong... Read more
15-inch 2.2GHz MacBook Pro on sale for $1899,...
Adorama has the new 15″ 2.2GHz Retina MacBook Pro on sale for $1899 including free shipping plus NY & NJ sales tax only. Their price is $100 off MSRP, and it’s the lowest price available for this... Read more
Mid-Size Tablet Shootout Posted: iPad mini wi...
I ‘m curious about how many iPads Apple is actually selling these days. It’s been widely rumored and anticipated that new models with A8 SoCs, 2 GB of RAM, 8 megapixel cameras, and fingerprint... Read more
The 15 Biggest iPad Air Problems And How To A...
What’s this? Fifteen “biggest” problems with the iPad Air? Does that mean there are a lot of smaller problems as well? Say it isn’t so! My old iPad 2 has manifested no hardware problems in three... Read more
TYLT Syncable-Duo, 2-in-1 USB Cable With Appl...
TYLT has introduced the Syncable-Duo, a universal cable solution for charging and syncing data to smartphones and tablets. The Syncable-Duo eliminates the need for multiple cables by incorporating... Read more
Save up to $140 off MSRP with Apple refurbish...
Apple is offering Certified Refurbished iPad Airs for up to $140 off MSRP. Apple’s one-year warranty is included with each model, and shipping is free. Stock tends to come and go with some of these... Read more
2.5GHz Mac mini on sale for $549, save $50
B&H Photo has the 2.5GHz Mac mini on sale for $549.99 including free shipping. That’s $50 off MSRP, and B&H will also include a free copy of Parallels Desktop software. NY sales tax only. Read more
Chromebooks Are Actually Sometimes A Better C...
Mac360′s Kate MacKenzie notes that when Steve Jobs announced the post-PC era, he was assuming that the dominant post-PC device would be the iPad he was unveiling, or another Apple product like the... Read more

Jobs Board

Position Opening at *Apple* - Apple (United...
**Job Summary** Being a Business Manager at an Apple Store means you're the catalyst for businesses to discover and leverage the power, ease, and flexibility of Apple Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** At the Apple Store, you connect business professionals and entrepreneurs with the tools they need in order to put Apple solutions to work in their Read more
Project Manager / Business Analyst, WW *Appl...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** As businesses discover the power of Apple computers and mobile devices, it's your job - as a Solutions Engineer - to show them how to introduce these Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** As more and more people discover Apple , they visit our stores seeking ways to incorporate our products into their lives. It's your job, as a Store Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.