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A My Passport Essential SE Edition External Hard Drive with 1 TB capacity. My Passport is a series of portable external hard drives and solid state drives produced by Western Digital.
WD GP drives are programmed to unload the heads whenever idle for a very short period of time. [14] Many Linux installations write to the file system a few times a minute in the background. [15] As a result, there may be 100 or more load cycles per hour, and the 300,000 load cycles rating of a WD GP drive may be exceeded in less than a year. [16]
Later 1.8-inch drives were updated with a micro-SATA connector and up to 320GB of storage (Toshiba MK3233GSG). The 1.8-inch form factor was eventually phased out as SSDs became cheaper and more compact. [38] There was an attempt to standardize this format as SFF-8123, but it was cancelled in 2005. [39]
Formerly, now a brand of WD: No Formerly, now a brand of WD: Seagate Technology [36] United States and Ireland Yes Yes, through stake in Kioxia: Yes No Yes, through its subsidiary SandForce and stake in Kioxia: Silicon Power [37] Taiwan No No Yes No No SK hynix [38] South Korea No Yes Yes No Yes (since 2012) [1] STEC [39] United States No No ...
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
Western Digital My Book external hard drive. My Book is a series of external hard drives produced by Western Digital.There are at least nine series of My Book drives: Essential Edition, Home Edition, Office Edition, Mirror Edition, Studio Edition, Premium Edition, Elite Edition, Pro Edition, AV DVR "Live Edition", and the World Edition.
The first HDD [11] had an average seek time of about 600 ms. [12] and by the middle 1970s, HDDs were available with seek times of about 25 ms. [13]Some early PC drives used a stepper motor to move the heads, and as a result had seek times as slow as 80–120 ms, but this was quickly improved by voice coil type actuation in the 1980s, reducing seek times to around 20 ms.
The My Cloud product line comprises personal network-attached storage (NAS) devices and multi-purpose servers, designed and marketed by Western Digital Corporation (WD). My Cloud devices are available in storage capacities of 2 terabytes , 3 terabytes, 4 terabytes, and 8 terabytes, and 16 terabytes.