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Writing a DVD at 1× (1 385 000 bytes per second) [5] is approximately 9 times faster than writing a CD at 1× (153 600 bytes per second). [6] However, the actual speeds depend on the type of data being written to the disc. [6] For Blu-ray discs, 1× speed is defined as 36 megabits per second (Mbit/s), which is equal to 4.5 megabytes per second ...
The NVMe specifications were developed by the NVM Express Workgroup, which consists of more than 90 companies; Amber Huffman of Intel was the working group's chair. Version 1.0 of the specification was released on 1 March 2011, [ 29 ] while version 1.1 of the specification was released on 11 October 2012. [ 30 ]
DVD+RW: rewriteable DVD defined by DVD+RW Alliance; DVD-RAM rewriteable, capable of random write access, not generally format-compatible with DVD; Blu-ray Disc: DVD successor, capable of high-definition video [1] BD-R: WORM Blu-ray Disc by the Blu-ray Disc Association; BD-RE: rewriteable BD; HD DVD: failed HD format defined by the DVD Forum [2]
NVM Express (NVMe): A modern interface designed specifically for SSDs, NVMe takes full advantage of the parallelism in SSDs, providing significantly lower latency and higher throughput than AHCI. [97] An M.2 (2242) solid-state-drive (SSD) connected into USB 3.0 adapter and connected to computer Mushkin Ventura, A USB that has an SSD inside
The physical phenomena on which the device relies (such as spinning platters in a hard drive) will also impose limits; for instance, no spinning platter shipping in 2009 saturates SATA revision 2.0 (3 Gbit/s), so moving from this 3 Gbit/s interface to USB 3.0 at 4.8 Gbit/s for one spinning drive will result in no increase in realized transfer rate.
The SAS is a new generation serial communication protocol for devices designed to allow for much higher speed data transfers and is compatible with SATA. SAS uses a mechanically identical data and power connector to standard 3.5-inch SATA1/SATA2 HDDs, and many server-oriented SAS RAID controllers are also capable of addressing SATA hard drives.
Non-volatile memory (NVM) or non-volatile storage is a type of computer memory that can retain stored information even after power is removed. In contrast, volatile memory needs constant power in order to retain data.
The SATA revision 3.2 specification, in its gold revision as of August 2013, standardizes M.2 as a new format for storage devices and specifies its hardware layout. [2]: 12 [8] Buses exposed through the M.2 connector include PCI Express (PCIe) 3.0 and newer, Serial ATA (SATA) 3.0 and USB 3.0; all these standards are backward compatible.
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