Storage terms starting with L

27 terms

  1. LAN (Local Area Network) A network of computers that generally spans a small area, such as a single building.
  2. LANE LAN Emulation. The architecture, protocols, and services that allow ATM-connected end systems to use the ATM network as if it were a LAN.
  3. LCU (Library Control Unit) connects a StorageTek tape robotic unit to a Library Management Unit (LMU) and controls the robot movement.
  4. LDAP A protocol for accessing directory information. LDAP or Lightweight Directory Access Protocol is used by browsers and email clients to look up email…
  5. LFS Loral Federal System, Gaithersburg, MD.
  6. Lightweight Directory Access Protocol (LDAP) An industry-standard protocol established by the Internet Engineering Task Force (IETF) that allows users to query and update information in a directory…
  7. little-endian A common difference between machines is the order in which they store the individual bytes of multi-byte numerical data.
  8. live stream A streaming media presentation that occurs in real time.
  9. LMU (Library Management Unit) the StorageTek control path to the host, that can manage up to 16 robotic tape units.
  10. load balancer A load balancer is a combination of a DNS name and a set of ports, which together provide a destination for all requests intended for your application.
  11. Load Balancing Referring to the ability to redistribute load (read/write requests) to an alternate path between server and storage device, load balancing helps to…
  12. local cluster A cluster located in a single data center. This type of cluster is not disaster tolerant.
  13. local failover Failover on the same node; this most often applied to hardware failover, for example local LAN failover is switching to the secondary LAN card on the same…
  14. local filer The filer you are logged in to.
  15. Local Group A small cluster of more than 30 galaxies "near" to our galaxy, including the Andromeda galaxy and the Magellanic Clouds.
  16. log-structured file system (LFS) A file system that avoids both multiple-write and synchronous-write problems by batching large numbers of writes into large, contiguous writes.
  17. logical data replication A type of on-line data replication that replicates logical transactions that change either the filesystem or the database.
  18. Logical Unit Number (LUN) A logical unit of storage.
  19. Longitudinal recording A recording format in which a slow or fast moving tape is passed by a stationary recording head.
  20. LSM (Library Storage Module) a tape library containing cells (or slots or bins) in which cartridges are stored, usually for access by an automated cartridge system. See ACS.
  21. LTO (Linear Tape-Open) A type of backup tape which can hold as much as 400 GB of data, or 600 CDs depending on the data file format.
  22. Lubricant (LOO-brih-kant) An oily or slippery substance.
  23. LUN Logical Unit Number. A logical unit of storage.
  24. LUN (Logical Unit Number) A unique identifier used on a SCSI bus to distinguish between devices that share the same bus.
  25. LUN Masking A method to restrict server access to storage not specifically allocated to that server.
  26. LVD (Low Voltage Differential) Introduced with Ultra2 SCSI, and further enhanced with Ultra160 and Ultra320 SCSI, LVD technology enables data transfer to 320MB/s and supports cable…
  27. LZW (Lempel-Ziv & Welch) A common, lossless compression standard for computer graphics, used for most TIFF files. Typical compression ratios are 4/1.