Storage — page 3 of 9

849 terms

Storage terms

  1. disk shelf A storage unit that contains disk drives.
  2. Distributed File System (DFS) A Windows file management system that allows data scattered across multiple servers to be treated as a single group.
  3. DLT (Digital Linear Tape) A type of backup tape which can hold up to 80 GB depending on the data file format.
  4. DLZ (Digital Lempel-Ziv) an improved form of the LZW data compression algorithm. See LZW.
  5. DMA (Direct Memory Access) The fastest method of data transfer available for multitasking operating systems.
  6. DNS domain naming service
  7. DNS caching A method for preventing unnecessary DNS lookups by caching DNS tables locally.
  8. domain controller (DC) A computer running NT Server that is contacted when a request comes in to log in a CIFS client or validate a request from an NFS client accessing a file…
  9. Domain Name System (DNS) (DNS) Hierarchical distributed database used for name/address translation and client-server rendezvous.
  10. DOS attributes Access classifications associated with all DOS files. Typical attributes are read only, archive, hidden, and system.
  11. Dropout Brief signal loss caused by a tape head clog, defect in the tape, debris, or other feature that causes an increase in the head-to-tape spacing.
  12. dump Noun. A backup to tape, created using the Data ONTAP dump command.
  13. dump path A path that specifies one volume, qtree, or subtree to back up.
  14. Duplex A dwelling divided into two units.
  15. Dynamic Disk A dynamic disk is a physical disk that provides features that basic disks do not, such as support for volumes spanning multiple disks.
  16. Dynamic Host Configuration Protocol (DHCP) The protocol used to assign Internet Protocol (IP) addresses to all nodes on the network.
  17. EA enterprise architecture
  18. Early Access Former term for First Customer Shipment (FCS). See "FCS."
  19. ECAP (Enhanced Cartridge Access Port) an 80-cartridge enter/eject facility for a StorageTek robotic tape library. See CAP.
  20. ECCST (Enhanced Capacity Cartridge System Tape) a double length tape cartridge with a nominal uncompressed capacity of approximately 800 Mbytes.
  21. edge device Any device, for example a NetCache appliance, that is deployed at the periphery of a LAN and WAN environment to interface traffic from the edge of one…
  22. EFB Environmental Fault Bus. A storage shelf component that is used to note disk and shelf events, including disk insertion or removal, fan faults, and power…
  23. EMRL (Embedded RAID Logic) Adaptec EMRL allows Zero-Channel RAID controllers to have exclusive access to the motherboard on the I/O device.
  24. EMS Event Management System. A subsystem that controls the generation and propagation of events in the Data ONTAP kernel.
  25. EMU Environmental Monitoring Unit. A storage shelf component that is used to note disk and shelf events, including disk insertion or removal, fan faults, and…
  26. emulated filer A software copy of the failed filer that is hosted by the takeover filer. The emulated filer appears to users and administrators like a functional version…
  27. end of availability (EOA) The date when a product ceases to be sold.
  28. end of life (EOL) The period when a product is supported but not sold.
  29. end of support (EOS) The period when a product is no longer supported.
  30. environmental fault bus (EFB) A storage shelf component that is used to note disk and shelf events, including disk insertion or removal, fan faults, and power supply faults.
  31. environmental monitoring unit (EMU) A storage shelf component that is used to note disk and shelf events, including disk insertion or removal, fan faults, and power supply faults.
  32. EOA Early Operational Assessment.
  33. EOL End Of Life. The period when a product is supported but not sold.
  34. EOS Earth Orbiting System (NASA term).
  35. Error-Correcting Code (ECC) Memory A type of memory that includes special circuitry for testing the accuracy of data as it passes in and out of memory.
  36. Escon Mainframe channel devised by IBM that supports data rates of 200 Mbit/s over fiber.
  37. ESCON (Enterprise Storage Connect) A type of fiber-optic channel used for inter-frame communication between EMC Symmetrix frames using EMC SRDF or between HP StorageWorks E XP series disk…
  38. ESCON (Enterprise Systems Connection) IBM's fiber-optic technology for connecting mainframes using IBM channels. ESCON architecture provides fast access to disk arrays and tape. See FICON.
  39. event log The default location (/var/adm/cmconcl/eventlog) where events are logged on the monitoring Continentalclusters system.
  40. Event Management System (EMS) A subsystem that controls the generation and propagation of events in the Data ONTAP kernel.
  41. Exabyte A unit of 1000 petabytes. See Byte.
  42. expansion adapter The hardware used to extend a computer's control over a peripheral device. The expansion adapter includes the expansion card, expansion slot, and…
  43. expansion card A printed circuit board that plugs into an expansion slot and extends a computer's control over a peripheral device.
  44. expansion slot The slots on the system board in which you insert expansion cards.
  45. export Data extracted or taken out of one environment or application usually in a prescribed format, and usually for import into another environment or…
  46. extended distance cluster A cluster with alternate nodes located in different data centers separated by some distance. Formerly known as campus cluster.
  47. Fabric The hardware that connects workstations and servers to storage devices in a networked storage architecture.
  48. failback In a failover cluster or server cluster, the process of returning a clustered service or application to its preferred node after the node has failed and…
  49. failed filer The filer in a clustered pair that has ceased operating. It remains the failed filer until giveback succeeds. See also "takeover."
  50. failover A cluster's ability to redirect requests from one server to another. Failover occurs when a user tries to access an application on an unavailable server…
  51. FAServer The original name for NetApp filers.
  52. fast-narrow (FN) A type of SCSI bus that supports 8-bit transfer.
  53. fast-wide (FW) A type of SCSI bus that supports 16-bit transfer.
  54. fast-wide-differential (FWD) A fast-wide SCSI implementation that uses differential signaling.
  55. Fault-Tolerance The ability of a processor to maintain mission effectiveness after some subsystems failed.
  56. FC A product of hydrolysis of an IgG antibody, consisting of parts of the constant regions of two heavy chains held together by a disulphide bridge, but…
  57. FC (Fibre Channel) A high-speed network technology typically used to build Storage Area Networks (SAN).
  58. FC-AL Fibre Channel-Arbitrated Loop. A type of Fibre Channel network in which devices are connected in a loop topology.
  59. FC-GS Fiber Channel Generic Services. An ANSI standard that specifies various Fibre Channel services.
  60. FCIA Fibre Channel Industry Association. A trade association devoted to promoting Fibre Channel technology.
  61. FCIP (Fibre Channel over IP) Fibre Channel over IP. A proposal advanced by the IETF's IP Storage Working Group for mapping Fibre Channel traffic directly onto IP, in order to…
  62. FCS Fire Control Section.
  63. FDDI Fiber Distributed Data Interface. An ANSI standard LAN architecture that uses optical fiber cable for high-speed transmission.
  64. FDDI adapter An adapter for connecting devices to an FDDI network.
  65. FDDI-fiber An FDDI adapter that supports fiber-optic cable.
  66. FDDI-TP An FDDI adapter that supports twisted-pair cable.
  67. feeder server The component of a news server that accepts news feeds from other news servers.
  68. Fiber Channel Generic Services (FCGS) An ANSI standard that specifies various Fibre Channel services.
  69. Fiber Distributed Data Interface (FDDI) (FDDI) A media access (transmission) control-level protocol with token-ring architecture, a communication bandwidth of 100 Mbps and supported on a fiber network…
  70. Fibre Channel (FC) A high-speed transmission technology.
  71. Fibre Channel Industry Association (FCIA) A trade association devoted to promoting Fibre Channel technology.
  72. Fibre Channel-Arbitrated Loop (FCAL) A type of Fibre Channel network in which devices are connected in a loop topology.
  73. Ficon Mainframe channel devised by IBM that supports data rates of 1 Gbit/s at distances from about 10 to 20 kilometers over fiber.
  74. FICON (Fibre Connectivity) a fibre optic technology that provides higher speeds at longer distances than ESCON. See ESCON.
  75. field-replaceable unit (FRU) Any hardware unit that can be replaced at the customer site.
  76. File Data Data which has an associated file system.
  77. file lock The implicit state of a file when opened by a client. Depending on the open mode, the file may be locked so as to prevent any other access, or certain…
  78. file mark Data on a tape that signals the boundaries of a tape file.
  79. File Server When several or many computers are networked together in a LAN situation, one computer may be utilized as a storage location for files for the group.
  80. file-level ACL In a Windows system, a list of permissions associated with a file that determines a user's or group's rights to access the file.
  81. filer An appliance that attaches to a computer network and is used for data storage. NetApp filers operate using Data ONTAP software.
  82. FilerView A Web-based tool for administering NetApp filers, which provides access through a graphical user interface. Developed by Network Appliance.
  83. filesystem replication The process of replicating filesystem changes from one node to another.
  84. Firewall A set of related programs that protect the resources of a private network from users from other networks.
  85. First Customer Shipment (FCS) The initial shipment of a NetApp product. Products with this designation have undergone extensive internal testing and fully met the NetApp criteria for…
  86. Flange pack A condition where the tape pack is wound up against one of the flanges of the tape reel.
  87. flush a hand of five cards all of the same suit, irrespective of value
  88. FN Fast-Narrow. A type of SCSI bus that supports 8-bit transfer.
  89. Format The internal structure of a file, which defines the way it is stored and used. Specific applications may define unique formats for their data (i.e.
  90. forward proxy A NetCache appliance configured as an intermediary server that accepts requests from clients and forwards them to a Web server or, if appropriate…
  91. FQDN Fully Qualified Domain Name. The complete name of a specific computer on the Internet, consisting of the computer's host name and its domain name.
  92. FRS (File Replication Service) A multimaster replication service that is used replicate files and folders between servers. [Exchange 2007]
  93. FRU Field-Replaceable Unit. Any hardware unit that can be replaced at the customer site.
  94. fully qualified domain name (FQDN) The complete name of a specific computer on the Internet, consisting of the computer's host name and its domain name.
  95. FW Fast-Wide. A type of SCSI bus that supports 16-bit transfer.
  96. FWD Forward
  97. GA General Availability. An FCS release that has demonstrated high availability and reliability over a sufficient number of customer sites.
  98. gatekeeper A small EMC Symmetrix device configured to function as a lock during certain state change operations.
  99. Gb (Gigabit) One billion bits. Unit of measure for data transfer.
  100. GB (Gigabyte) 1,073,741,824 bytes, or 1,024 megabytes. Unit of measure for computer storage. Sometimes defined as one billion bytes.

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