Storage

Storage terms

1. (PC)NFS Personal Computer Network File System.
2. A Tape Subsystem contains transports (or tape drives) controlled by a tape controller and attached to a host.
3. A Transport the device into which a magnetic tape cartridge can be inserted in order to be accessible by the read/write heads and eject mechanism.
4. ABARS (Aggregate group Backup And Recovery Support) an SMS tool that backs up related data sets with identical backup attributes (such as type of storage medium, retention period, or destination) that have…
5. access control list (ACL) (ACL) In Windows-based systems, a list of access control entries (ACE) that apply to an entire object, a set of the object's properties, or an individual…
6. Access storage Storage conditions at or near room ambient conditions that allow tape collections to be readily accessed for immediate playback.
7. Account Migrator Service (AMS) A service installed on a Windows NT or Windows 2000 system that automatically migrates Windows NT domain users to the filer /etc/passwd file.
8. ACDS (Active Control Data Set) a VSAM linear data set containing the SMS active source control data set (SCDS). See SCDS.
9. ACF (Automatic Cartridge Facility) contains 10-cartridges and functions as a low-cost tape library.
10. ACL See definition for access control list (ACL)
11. ACL (access control list) A security type used by Lotus Notes developers to grant varying levels of access and user privileges within Lotus Notes databases.
12. ACS (Automated Cartridge Systems) comprise cartridge storage cells, transports, and some kind of robotic mechanism(s) to move the cartridges between the cells and either a transport or a…
13. ACS (Automatic Class Selection) routines automatically assign an SMS-managed data set to a storage class based upon the data set's characteristics. See SMS.
14. active file system A file system in use, excluding its snapshots.
15. Active Negation Provides better noise immunity on a SCSI bus.
16. Active Server Page (ASP) A Web server scripting language developed by Microsoft for its Internet Information Server.
17. Active Termination An active terminator uses one or more voltage regulators to produce the termination voltage, rather than using resister voltage dividers.
18. adapter An expansion card.
19. address resolution The procedure for determining an address corresponding to the address of a LAN or WAN destination.
20. Address Resolution Protocol (ARP) A TCP/IP protocol used to obtain a node's physical address.
21. administration host A client computer that is used to manage a filer through a Telnet or Remote Shell connection.
22. Administrator Administrator means the Administrator of the Wage and Hour Division, Department of Labor, and such authorized representatives as may be designated to…
23. ADS (Active Directory Service) A directory service part of Windows 2000 and higher that identifies all resources on the network and makes them accessible to users and applications.
24. ADSM (ADSTAR Distributed Storage Manager) , now called Tivoli Storage Manager, is an IBM software product that enables users to manage storage, data access and backup across multivendor…
25. AES Army [Tactical Command and Control System] Ex
26. Agent Agent means any individual, other than a broker-dealer, who represents a broker-dealer or issuer in effecting or attempting to effect purchases or sales…
27. AIT (Advanced Intelligent Tape) "Advanced Intelligent Tape", a high-speed, high-capacitymagnetic tape data storage format developed and controlledby Sony.
28. ALDC (Advanced Lossless Data Compression) a data compression algorithm that provides substantially greater compression efficiency than IDRC or DLZ. See IDRC.
29. American National Standards Institute (ANSI) (ANSI) A national coordinator of voluntary standards activities, and an approval organization and clearinghouse for consensus standards in the United States.
30. AMS 1. Air Mass - a body of air covering a relatively wide area and exhibiting horizontally uniform properties. 2. American Meteorological Society
31. Analog recording A recording in which continuous magnetic signals are written to the tape that are representations of the voltage signals coming from the recording…
32. Analog-to-digital The process in which a continuous analog signal is quantized and converted to a series of binary integers.
33. ANSI American National Standards Institute - a private, non-profit organization that administers and coordinates the U.S.
34. API Ascent-Phase Intercept.
35. API (Application Program Interface) A language and message format used by an application program to communicate with the operating system or some other control program such as a database…
36. Appliance A device for converting one form of energy or fuel into useful energy or work.
37. ApplianceWatch A suite of products for enterprise system management that is formally certified by leading vendors of system management frameworks.
38. Application Program Interface (API) (API) An API is a set of system calls or routines for application programs to access services from operating systems or other programs.
39. application restart Starting an application, usually on another node, after a failure. Application can be restarted manually, which may be necessary if data must be restarted…
40. application service provider (ASP) A class of service provider that hosts software applications on its own servers within its own facilities.
41. application-specific integrated circuit (ASIC) A custom-designed chip developed for a specific application.
42. Arbitrated loop A basic configuration of Fibre Channel networks in which up to 126 devices can share a single segment or loop, with one additional node left for linkage…
43. Arbitrator A private, disinterested person chosen by the parties in arbitration to hear evidence concerning the dispute and to make an award based on the evidence.
44. Archival storage Storage conditions specifically designed to extend or maximize the lifetime of stored media.
45. Areal Density Refers to the amount of data that can be stored in a givenamount of hard disk platter.
46. ARP address resolution protocol.
47. array An Array is a single server type used for horizontal scaling. It may be a single worker slave task plugged into our Grid system to scale based on the…
48. ASIC Application Specific Integrated Circuit.
49. ASP (1) Airborne Surveillance Platform. (2) Advanced Sensor Program. (3) Advanced Sensor Platform. (4) Annual Service Practice.
50. ASPI (Advanced SCSI Programming Interface) A standard SCSI software interface that acts as a liaison between host adapters and SCSI device drivers, and allows them to share a single hardware…
51. ASPI Manager A software module that provides an interface between ASPI modules, a host adapter board, and the SCSI devices connected to the adapter.
52. ASPI Module Device-level code specific to a particular kind of SCSI device that communicates with the ASPI manager.
53. assertion failure Type of failure that occurs when a program encounters a line of code that tells the program to panic.
54. Asymmetric Multi-Processing Multi-processing using two or more processors that are not equivalent in their capabilities and their use.
55. asymmetrical cluster A cluster that has more nodes at one site than at another. For example, an asymmetrical metropolitan cluster may have two nodes in one building, and three…
56. asynchronous data replication Local I/O will complete without waiting for the replicated I/O to complete; however, it is expected that asynchronous data replication will process the…
57. Asynchronous Data Transfer A method of SCSI data transfer which is not synchronized to a set timing interval.
58. Asynchronous Replication After data has been written to the primary storage site, new writes to that site can be accepted, without having to wait for the secondary (remote)…
59. asynchronous transfer mode (ATM) A network technology that combines the features of cell-switching and multiplexing to offer reliable and efficient network services.
60. ATA (Advanced Technology Attachment) The standard low-cost device interface for desktop and laptop PCs.
61. ATL (Automated Tape Library) an alternative term for Automated Cartridge System. See ACS.
62. ATM Anti-Tactical Missile.
63. authentication The process of validating the credentials of a person, computer process, or device.
64. Authorized Service Provider (ASP) Third-party organization that services NetApp products.
65. auto-terminatation A method by which bus termination is detected and implemented internally such that an external terminator is not required.
66. Autoloader a device with (usually only) a single transport that can automatically load and unload the transport with one of the cartridges in its library.
67. automatic failover Failover directed by automation scripts or software (such as Serviceguard) and requiring no human intervention.
68. autosupport Mechanism that triggers e-mail messages from the customer site to Network Appliance Technical Support or another specified e-mail recipient when a problem…
69. Auxiliary Storage / External Storage / Secondary Storage Data not directly accessible to the CPU, requiring the use of computers input/output channels.
70. Backing Any type of line used to partially fill a reel before the main fishing line is added; commonly used in fly-fishing or by bass anglers who use many of the…
71. Backup Domain Controller (BDC) In a Windows 2000 domain, backup domain controllers are not required; all domain controllers are peers, and all can perform maintenance on the directory.
72. Backup/Restore A two step process. Information is first copied to non-volatile disk or tape media.
73. Bandwidth Throttling In Snap EDR, the ability to limit the bandwidth used by replication to maintain bandwidth for business-critical applications.
74. baseline transfer A complete transfer of a source volume to a mirror volume. The process involves establishing a TCP connection between the mirror and the source and…
75. Basic Disk A basic disk is a physical disk that can be accessed by MS–DOS and all Windows-based operating systems.
76. BC (Business Copy) A PVOL or SVOL in an HP StorageWorks XP series disk array that can be split from or merged into a normal PVOL or SVOL.
77. BCV (Business Continuity Volume) An EMC Symmetrix term that refers to a logical device on the EMC Symmetrix that may be merged into or split from a regular R1 or R2 logical device.
78. BDC A rare type of kidney cancer that grows and spreads quickly. It begins in the duct of Bellini in the kidney. Also called Bellini duct carcinoma.
79. bi-directional configuration A continental cluster configuration in which each cluster serves the roles of primary and recovery cluster for different recovery groups.
80. big-endian A common difference between machines is the order in which they store the individual bytes of multi-byte numerical data.
81. Binary number A number that can be represented using only two numeric symbols - 0 and 1. A number in base 2.
82. bind To assign a specific "network address" to a "socket".
83. Binder A temporary or preliminary agreement, in effect for less than 60 days, that provides coverage until a policy can be written or delivered.
84. binding ports A NetApp appliance feature that enables administrators to designate which network interfaces (ports) are configured to handle incoming and outgoing…
85. BIOS Basic Input/Output System.
86. BIOS (Basic Input Output System) The set of user-independent computer instructions stored in a computers ROM, immediately available to the computer when the computer is turned on.
87. Bit A bit ( B inary dig IT ) is the smallest unit of computer data. A bit consists of either 0 or 1. There are eight bits in a byte.
88. Block Data A group of data records that are manipulated together as a unit, such as database records.
89. Blocking The sticking together or adhesion of successive windings in a tape pack. Blocking can result from (1) deterioration of the binder, (2) storage of tape…
90. blocking factor In a tape backup operation, the number of tape blocks that are transferred in each write operation.
91. Bootable Array Support The ability to make the system boot from a RAID array instead of from a standalone (single) disk.
92. BPI (Bits Per Inch) BPI measures data densities in disc and magnetic tape systems.
93. BSD UNIX Berkeley Software Distribution UNIX. A version of UNIX developed by the Computer Systems Research Group at the University of California, Berkeley.
94. BURT Bug Reporting Tool. The internal system used by Network Appliance for tracking bugs in NetApp products as well as requests for enhancements or new…
95. Bus A parallel circuit that connects the major components of a computer, allowing the transfer of electric impulses from one connected component to any other.
96. Bus Mastering The ability to process SCSI commands on the SCSI card due to its built-in processor without using the system's CPU.
97. business continuity An organization's ability to continue to operate in the event of a disaster or disruption See also disaster recovery plan.
98. Business Recovery Service Service provided by a vendor to host the backup systems needed to run mission critical applications following a disaster.
99. byte Eight bits. A byte is a collection of bits used by computers to represent a character (i.e., "a", "1", or "&").
100. Cache A type a computer memory that temporarily stores frequently used information for quick access.