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, SSD, dynamic RAM, static RAM, Robson cache and NV cache.
References in periodicals archive ?
In the year Lexus Hybrid Drive made its debut, 26,000 vehicles were sold, while by this month the annual total was 113,000.
The new Lexus Hybrid Drive system aims to deliver a driving experience that is both rewarding and engaging Ebrahim K Kanoo, Toyota and Lexus sole distributor in Bahrain, will start offering the Lexus model by early February 2010.
"The first hybrid drive in a series production car from Mercedes-Benz makes this S-Class model the most economical petrol-engined luxury saloon," he added.
With the micro hybrid drive system the engine stops when it senses that the speed falls below 5mph and the driver is braking.
The system introduced on the Atlas AR 65-Hybrid loader by Atlas-Weyhausen is a "mild" hybrid drive, with a motor-generator installed in the powertrain between the diesel engine and hydraulic pump that is only assisting the main engine.
The Oshkosh ProPulse series hybrid drive system used in the military's next-generation Heavy Expanded Mobility Tactical Truck HEMTT-A3 is using motors with die-cast copper rotors.
Both are used to power the accessories and recharge the hybrid drive's ultra-capacitors.
ENERGY RESOURCE-14 August 2006-Enova Systems Announces Hybrid Drive Deal with Major Fleet Operator(C)2006 JeraOne - http://www.jeraone.com
The Crosstown's hybrid drive combines an electric motor with a 61bhp petrol engine, and the car's compact dimensions are similar to the current Smart Fortwo
Tenders are invited for delivery of three brand new passenger cars with hybrid drive, with the simultaneous purchase by the contractor of one used passenger car, owned by the employer.
The top of the range model is the PS22,845 hybrid drive version.
Available in 750GB and 1TB capacities, Toshiba's MQ01ABDH Series Hybrid Drive (wow, what a mouthful) stuffs a pair of platters into a 2.5-inch enclosure that measures 9.5mm high.