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The ST-506 HDD was the first 5.25 inch hard disk drive, introduced in 1980 [3] by Shugart Technology (now Seagate Technology). It stored up to 5 megabytes after formatting (153 cylinders, 4 heads, 32 sectors/track, 256 bytes/sector) [ 4 ] and cost US$1,500 (equivalent to $5,547 in 2023). [ 5 ]
Several Parallel ATA hard disk drives. Parallel ATA, originally IDE and then standardized under the name AT Attachment (ATA), with the alias P-ATA or PATA retroactively added upon introduction of the new variant Serial ATA. The original name (circa 1986) reflected the integration of the controller with the hard drive itself.
Seagate Technology Holdings plc is an American data storage company. It was incorporated in 1978 as Shugart Technology and commenced business in 1979. [2] Since 2010, the company has been incorporated in Dublin, Ireland, with operational headquarters in Fremont, California, United States.
ST3000DM001 as external hard drives in retail packaging. Anand Lal Shimpi of AnandTech noted that the ST3000DM001 is "a bit faster in sequential performance than the old Barracuda XT, at lower power consumption" and that "Seagate appears to have optimized the drive's behavior for lower power rather than peak performance".
Hard disk Seagate Barracuda 1500 GB, 3.5 inch, capacity 1.5 TB, built 2011. The head unload ramp is the orange plastic piece on the right edge of the drive. Available in capacities between 2 TB and 3 TB (XT) with 64 MB cache, 1 TB and 2 TB (LP) with 16 MB or 32 MB cache, 1 TB, 1.5 TB and 2 TB (Green) with 16 MB to 64 MB cache depending on model.
In 2010, hard-disk manufacturers introduced drives with 4,096‑byte sectors (Advanced Format). [3] For compatibility with legacy hardware and software, those drives include an emulation technology ( 512e ) that presents 512‑byte sectors to the entity accessing the hard drive, despite their underlying 4,096‑byte physical sectors. [ 4 ]
FreeAgent is a line of external hard drives manufactured by Seagate. They include FreeAgent Pro, FreeAgent Desktop, and FreeAgent Go. They range in size from 60 GB to 3 TB. On May 20, 2010, Seagate released an updated range of FreeAgent drives. It includes the FreeAgent Desk, FreeAgent Go, FreeAgent GoFlex and FreeAgent Xtreme.
If the value in the register is set to less than the actual hard drive size then effectively a host protected area is created. It is protected because the OS will work with only the value in the register that is returned by the IDENTIFY DEVICE command and thus will normally be unable to address the parts of the drive that lie within the HPA.
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