Flash storage always needs to move some old data around while writing, to ensure the flash's finite write life is consumed equally if there were a bug in the wear levelling algorithm it could cause data loss if the card were unplugged at the exact wrong time. Microdrives might be better at handling power loss in the middle of writing.Microdrives allow more write cycles, making them suitable for use as swapspace in embedded applications.Until 2006, Microdrives had higher capacity than CompactFlash cards.Hitachi had also stopped production of its trademarked Microdrive product.Ī pair of 1gb IBM Microdrives, with a PCMCIA/Cardbus adapterĦ gigabytes (Hitachi), 8 gigabytes (Seagate) Īs of July 2012, there are no known manufacturers of 1-inch form-factor harddisk drives. had started promoting mini-HDD (small form factor hard disk drive). for infringement of multiple Hitachi GST's patents relating to hard disk drives, after GS Magic Inc. In, Hitachi Global Storage Technologies announced it had filed lawsuit against GS Magicstor, Inc., GS Magic, Inc., and Riospring, Inc. It was to be followed by 2.2 and 4.8GB 1-inch HDD that was unveiled in 2004 International CES, with 0.8-inch HDD. (subsidiary of GS Magic, Inc.) announced it had produced 1-inch hard disk drive with capacity of 2.4GB at the beginning of the year 2003, originally marketed as an alternative to Microdrive by Hitachi Global Storage Technologies. In, a Chinese manufacturer called GS Magicstor, Inc. These devices came in the shape of a hockey puck with an integrated USB 2.0 cable. Seagate also sold a standalone consumer product based on these drives with a product known as the Pocket Hard Drive.
These drives were also commonly known as the Seagate ST1. In 2004, Seagate launched 2.5 and 5 GB hard disk drives in the same small physical form-factor as IBM Microdrive, and referred to them as either 1-inch hard drives or CompactFlash hard drives due to the trademark issue. In 2003, 2 GB and 4 GB models were announced by Hitachi, followed by 6 GB capacity model in 2005. Following the merger of IBM and Hitachi HDD business units, Hitachi Global Storage Technologies continued the development and marketing of the Microdrive. A second generation of Microdrive was announced by IBM in 2000 with increased capacities at 512 MB and 1 GB. The physical dimensions of Microdrive were 1.65" × 1.42" × 0.197" (42.0 mm × 36.0 mm × 5.0 mm) and conformed to CompactFlash Type II card standard. In 1999, IBM launched the first generation 1-inch Microdrive with storage capacities of 170 MB and 340 MB. These units weighed about 28 g (1 oz), with dimensions of 2.0" × 1.44" × 0.414" (50.8 mm × 36.5 mm × 10.5 mm) and were the physically smallest hard drives in the world before the Microdrive. Prior to the 1-inch Microdrive, a 1.3-inch HDD was developed and launched in 1992 by HP with a capacity of 20 MB.
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