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2. Solid-state drive - Wikipedia

   en.wikipedia.org/wiki/Solid-state_drive

   Comparison of NAND-based SSD and HDD Attribute or characteristic Solid-state drive (SSD) Hard disk drive (HDD) Price per capacity SSDs are generally more expensive than HDDs and are expected to remain so. As of early 2018, SSD prices were around $0.30 per gigabyte for 4 TB models. [23]

3. Solid-state storage - Wikipedia

   en.wikipedia.org/wiki/Solid-state_storage

   An SSD, in form of a 2.5-inch bay device that uses Serial ATA (SATA) interface Internals of an SD card , showing the flash memory and controller integrated circuits A solid-state drive (SSD) provides secondary storage for relatively complex systems including personal computers , embedded systems , portable devices , large servers and network ...

4. Hybrid drive - Wikipedia

   en.wikipedia.org/wiki/Hybrid_drive

   An example of an often confused dual-drive system being considered an SSHD is the use of laptops which combine separate SSD and HDD components into the same 2.5-inch HDD-size unit, while at the same time (unlike SSHDs) keeping these two components visible and accessible to the operating system as two distinct partitions.

5. Disk sector - Wikipedia

   en.wikipedia.org/wiki/Disk_sector

   Geometrically, the word sector means a portion of a disk between a center, two radii and a corresponding arc (see Figure 1, item B), which is shaped like a slice of a pie. Thus, the disk sector (Figure 1, item C) refers to the intersection of a track and geometrical sector .

6. Disk buffer - Wikipedia

   en.wikipedia.org/wiki/Disk_buffer

   In computer storage, a disk buffer (often ambiguously called a disk cache or a cache buffer) is the embedded memory in a hard disk drive (HDD) or solid-state drive (SSD) acting as a buffer between the rest of the computer and the physical hard disk platter or flash memory that is used for storage. [1]

7. Enterprise and Data Center Standard Form Factor - Wikipedia

   en.wikipedia.org/wiki/Enterprise_and_Data_Center...

   As a family of form factors, it defines specifications for the mechanical dimensions and electrical interfaces devices should have, to ensure compatibility between disparate hardware manufacturers. The standard is meant to replace the U.2 form factors for drives used in data centers. [1] EDSFF provides a pure NVMe over PCIe interface. One ...