hybrid drive

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hybrid drive

(1) An optical disc drive that supports more than one format. See Blu-ray.

(2) A storage drive with a small amount of solid state flash memory (SSD) and a large amount of hard disk. See solid state hybrid drive and Fusion Drive.

(3) A hard drive with a disk cache made of flash memory. If the next set of data called for by the computer is in the cache, the transfer is much faster than reading from the disk. The capacity of the flash cache is a small percentage of the drive's total space.

RAM Caches: DRAM and SRAM
Since the 1990s, hard drives have had a small dynamic RAM (DRAM) cache built in or on the controller. Because DRAM is faster than flash memory, hybrid drives generally use both DRAM and flash memory caches, and they may use static RAM (SRAM) instead of DRAM because SRAM is even faster. See cache, flash memory, solid state drive, dynamic RAM, static RAM, Robson cache and NV cache.
References in periodicals archive ?
The FlashLINK(TM)2 is a highly scalable platform, capable of supporting a broad spectrum of SSD applications ranging from 2 Channels for Hybrid Hard Disk Drive and Consumer products to 16 Channels for the enterprise segment.
Second generation hybrid hard disk drives were announced by Seagate.
To elucidate this impact and to determine where today's drive technologies excel and where they don't, IDC partnered with a third party, independent laboratory to compare and contrast six different storage devices (two traditional mobile PC hard disk drives, two solid state drives, and two hybrid hard disk drives) in a single setting, under a common set of tests, and with identical computing platforms.
Content Outline: Executive Summary What is a Hybrid Hard Disk Drive?
As the launch is fast approaching, opposing PC hardware caching technologies, hybrid hard disk drives (H-HDDs) and alternative embedded NAND, are competing to deliver the preferred NAND caching solution to PC OEMs.
The HDD industry's unprecedented support and promotion of hybrid hard disk drive technology should help to build momentum for its adoption," said John Rydning, research manager for hard disk drives at IDC.
the world leader in advanced semiconductor technology solutions, today announced major component technology advancements including the 40-nanometer (nm) 32-Gigabit (Gb) NAND flash, the first prototype of the next-generation of memory -- PRAM (Phase-change Random Access Memory), and a new System-on-Chip controller for the soon-to-be-released Hybrid Hard Disk Drive.
A much-discussed example of this application-creating role is in how OneNAND memory is now being specified as the buffer memory inside a hybrid hard disk.
the world leader in advanced memory technology, today announced that it is exhibiting the first commercial prototype of a Hybrid Hard Disk (HHD), the much-anticipated next generation hard drive for notebooks and PCs that integrates NAND flash memory with rotating magnetic storage.
The higher-speed memory is targeted toward a wide range of applications beyond mobile handsets including memory cards for digital cameras and use in hybrid hard disk drives.
The Hybrid Hard Disk is expected to be produced by many of the industry leaders later this year.
The extremely fast performance of OneNAND makes it not only well-suited for multimedia handset applications, but also for use as a non-volatile buffer in hybrid hard disks, and for other data computing applications.