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DRBD is a distributed replicated storage system for the Linux platform. It mirrors block devices between multiple hosts, functioning transparently to applications on the host systems. This replication can involve any type of block device, such as hard drives, partitions, RAID setups, or logical volumes. [3]
The term fixed-block architecture was created by IBM in 1979 [3] to distinguish this format from its variable-length record format. Each track is divided into fixed-length blocks, consisting of an ID field and a data field. Application programs refer to blocks by relative block number, and cannot address them by cylinder, head and record.
A Replay Protected Memory Block (RPMB) is provided as a means for a system to store data to the specific memory area in an authenticated and replay protected manner and can only be read and written via successfully authenticated read and write accesses. The data may be overwritten by the host but can never be erased.
DBMSes often use their own block I/O for improved performance and recoverability as compared to layering the DBMS on top of a file system. On Linux the default block size for most file systems is 4096 bytes. The stat command part of GNU Core Utilities can be used to check the block size. In Rust a block can be read with the read_exact method.
The NVM Express command set has a generic Dataset Management command set, for hinting the host's intent to the storage device on a set of block ranges. One of its operations, DEALLOCATE performs trim. It also has a WRITE ZEROES command that provides a DEALLOCATE hint and allows the disk to trim and return zeroes.
The subroutine uses the following commands: DUP duplicates the number on the stack; 6 pushes a 6 on top of the stack; < compares the top two numbers on the stack (6 and the DUPed input), and replaces them with a true-or-false value; IF takes a true-or-false value and chooses to execute commands immediately after it or to skip to the ELSE; DROP ...
Intel Rapid Storage Technology (RST) is a driver SATA AHCI and a firmware-based RAID solution built into a wide range of Intel chipsets. Currently also is installed as a driver for Intel Optane temporary storage units. It contains two operation modes that follow two Intel specific modes rather than the SATA standard. The name modes and the ...
A functional specification (also, functional spec, specs, functional specifications document (FSD), functional requirements specification) in systems engineering and software development is a document that specifies the functions that a system or component must perform (often part of a requirements specification) (ISO/IEC/IEEE 24765-2010).