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 ?
operates more than one hundred (100) transit buses at Denali, and has announced its intention to apply hybrid drive technology in a large portion of this fleet.
It is now up to fleet managers to identify where their operations can best take advantage of commercial hybrid drive technology.
ISE Corporation, based in San Diego, is a leading supplier of hybrid drive systems and components for heavy-duty vehicles such as buses, trucks, trams, airport equipment, and military vehicles.
The issue of climate changes and uncertainty regarding the supply and pricing of oil makes hybrid drive an extremely attractive technology for our customers," says Volvo CEO Leif Johansson.
WD, a Western Digital (Nasdaq:WDC) company and a provider of storage solutions, announced on Friday that it will demonstrate the world's fastest 4 TB hybrid drive at the SATA-IO booth (#205) at Storage Visions 2015, being held between 4 January 2015 to 5 January 2015 in Las Vegas, Nevada.
5-inch Internal Solid State Hybrid Drive Offers Easy and Speedy Upgrade to Existing Notebooks
A total of 13 models, including the brand's hybrid line-up, LSh, GSh, RXh and CTh, all featuring Lexus Hybrid Drive, a technology developed solely by Lexus for use in its range of luxury vehicles, are displayed at the region's premier event.
The S 400 Hybrid was the world's first car to feature a standard-spec hybrid drive system with lithium-ion battery in 2009.
It uses the Lexus Hybrid Drive full hybrid system with official figures of 94g/km of CO2 qualifying for zero annual road tax, and economy nudging 70mpg.
In its third consecutive participation at Abu Dhabi's future energy signature show, Lexus showcased its new RX 450h and GS 450h vehicles equipped with the cutting-edge Lexus Hybrid Drive technology and other hybrid intelligence systems offering advanced driving information and control features.
Since the first RX 400h took to the road in 2005, through to the beginning of this month, Lexus has sold more than half a million vehicles equipped with its Lexus Hybrid Drive system.