SAF-TE (SCSI Accessed Fault-Tolerant Enclosure)An open specification that provides a comprehensive standardized method to monitor and report status information on the condition of disk drives, power…
SAN (Storage Area Network)A high-speed subnetwork of shared storage devices. A storage device is a machine that contains nothing but a disc or discs for storing data.
SAS (Serial Attached SCSI)The next-generation SCSI interface, the serial implementation of the SCSI standard, providing greater flexibility, performance, reliability, and…
SATA (Serial ATA)The successor to parallel ATA for data storage; a point-to-point connection that delivers full throughput to each storage device by allowing a single…
ScissionThe process in which a chemical bond in a molecule is broken either by reaction with another molecule, such as water, or by the absorption of a high…
SCSI (Small Computer System Interface)Pronounced skuzzy. A common, industry standard, electronic interface (highway) between computers and peripherals, such as hard discs, CD-ROM drives and…
SCSI addressThe full address of a device, consisting of the SCSI adapter number and SCSI ID, for example, 8a.1
SCSI BusA host adapter and one or more SCSI peripherals connected by cables in a linear chain configuration.
SCSI DeviceA device such as a host adapter board, fixed disk drive, or CD-ROM drive that is an initiator or a target or both, and is attached to a SCSI bus cable.
SCSI IDA unique identification number used for each device on the SCSI chain.
SDStrategic Defense Command (Army term) (See also SDC).
SDLT / SuperDLT"Super Digital Linear Tape" technology, a variant with highercapacity can store from 110 GB to 300GB on a single cartridgeand can transfer data at speeds…
Seamless Streaming TechnologyAdaptec's technology that optimizes Ultra320 SCSI performance by ensuring fast, smooth handling of data and SCSI commands.
Secure Shell (SSH)A protocol that is a standard method for replacing Telnet and Remote Shell sessions to secure encrypted communication over the Internet.
Secure Sockets Layer (SSL)A protocol that provides secure data communication through data encryption. This protocol enables authentication, integrity, and data privacy over…
SecureAdminA security product that enables you to administer a NetApp appliance in a nontrusted environment by creating a secure exchange between a client and the…
SecureShareA suite of products that enable UNIX and Windows-based applications to concurrently access and update shared files, with the integrity and cache coherency…
security descriptor (SD)The NTFS security information associated with a file. The SD contains the owner SID; owning group SID, which is not used; the Discretionary ACL, which is…
security ID (SID)The unique identifier that is used to identify Windows NT security objects (users and groups).
security styleThe security scheme in effect for a given file or directory. This may be UNIX-style, NTFS-style, or mixed.
serial consoleA terminal attached to the serial port of a NetApp appliance. Used to monitor and manage the appliance's operations.
Serial TechnologyAn interface design that allows data to be sent one bit at a time, using thin cables, and is capable of faster speeds, greater reliability, and more…
ServerAny computer on a network that contains data or applications shared by users of the network on their client PCs.
Shadow CopyA shadow copy is a high fidelity point-in-time copy of the original data. In the Windows environment, shadow copies are created using the Volume Shadow…
shareShare means the basic unit of capital of a Connecticut credit union. Members may receive dividends based on the number of shares held.
share-level ACLIn Windows, a special type of ACL, distinct from ACLs on files, that can be used to restrict access to various users or groups.
Signal-to-Noise RatioA specifically produced response (signal) compared to the response level (noise) when no specific stimulus (activity) is present.
Siloan alternative name for an Automated Cartridge System. See ACS.
Simple Network Management Protocol (SNMP)A standard Internet protocol that facilitates communications between a system being managed and the management console or framework.
SmartFilterSoftware that restricts access to Web sites. It identifies the sites that contain content in various categories, maintains lists of those sites in control…
SMBServer Message Block. The Microsoft file-sharing protocol that preceded CIFS.
SMPTEAbbreviation for the Society of Motion Pictures and Television Engineers.
SMS (Storage Management Subsystem)takes over many storage management tasks that were previously performed manually, such as such as space management, backup processing, and data set…
SnapCopyA software feature that enables you to copy one volume to another through the vol copy command set. Developed by Network Appliance.
SnapManager for ExchangeA suite of products that provide rapid data recovery for Microsoft Exchange, back up files without interrupting e-mail service, and enable efficient…
SnapMirrorA product that performs automated file system replication of a volume onto the same or a separate disk or filer. Developed by Network Appliance.
SnapRestoreA product that restores an entire volume to the state recorded in a previously taken snapshot. Developed by Network Appliance.
snapshotAmazon Elastic Block Store creates snapshots or backups of your volumes and stores them in Amazon S3.
Snapshot reserveThe portion of a volume's disk space that is reserved for snapshots.
Snapshot TechnologyA technology that takes point-in-time images of a file system, allowing the system to be rolled back to a specific time in case of disaster.
SNIAStorage Networking Industry Association. An organization dedicated to the advancement and development of standards for network storage.
SNIA (Storage Networking Industry Association)"Storage Networking Industry Association" is an association ofproducers and consumers of storage networking products, whosegoal is to further storage…
SNMPSimple Network Management Protocol. A standard Internet protocol that facilitates communications between a system being managed and the management console…
SNMP agentA process that gathers status and diagnostic information and forwards it to network management stations.
SNMP communityName that is used as a password by the SNMP manager to communicate with the SNMP agent.
SNMP trapAn asynchronous, unsolicited message sent by an SNMP agent to an SNMP manager indicating that an event has occurred on the filer.
SNTPSimple Network Time Protocol. A variation of NTP used to synchronize computer clocks on the Internet.
soft linkA file system object that can be used to redirect a path transparently to another part of the file system. Also known as "symlink" or "symbolic link."
special device fileThe device file name that the HP-UX operating system gives to a single connection to a node, in the format /dev/devtype/filename.
split brain syndromeSplit brain syndrome occurs when all networks designated to carry internal cluster communications fail, and nodes cannot receive heartbeat signals from…
SPOF (Single Point of Failure)A component of a cluster or node that, if it fails, affects access to applications or services. See also multiple points of failure.
SSHSecure Shell. A protocol that is a standard method for replacing Telnet and Remote Shell sessions to secure encrypted communication over the Internet.
Stick slipThe process in which (1) the tape sticks to the recording head because of high friction; (2) the tape tension builds because the tape is not moving at the…
Sticky shedThe gummy deposits left on tape path guides and heads after a sticky tape has been played.
Sticky tapeTape characterized by a soft, gummy, or tacky tape surface. Tape that has experienced a significant level of hydrolysis so that the magnetic coating is…
Storage Area Network (SAN)A Storage Area Network (SAN) is aÃÂ network of storage disks. In large enterprises, a SAN connects multiple servers to a centralized pool of disk…
Storage ArrayA subsystem which houses a group of disks (or tapes), together controlled by software usually housed within the subsystem.
Storage Consolidation"Storage Consolidation" is a method of centralizing data storageamong multiple servers. Also know as storage convergence.
Storage ControllerProviding such functionality as disk aggregation (RAID), I/O routing, and error detection and recovery, the controller provides the intelligence for the…
Storage directorA switch designed to link elements of a SAN or NAS across multiple sites. Storage directors are meant to act as a kind of switch of switches and are…
stream splittingThe process of delivering a unique stream to multiple clients simultaneously. Stream splitting reduces the number of requests sent across the network to…
streaming acceleratorA NetCache appliance configured to cache and split content from one or more streaming servers and provide that content to clients that request it.
streaming mediaaudio-visual content that is played as it is being downloaded. Thus, an Internet user could begin watching a video clip as the footage downloads rather…
streaming media cacheA NetCache appliance configured to proxy client requests for streaming media. Also known as "streaming media proxy."
streaming media presentationA general term used to describe the delivery of live or on-demand streaming media. A streaming media presentation can consist of multiple unique streams.
streaming serverA server configured to serve streaming media to clients.
StressThe response of the body to physical, mental, or emotional pressure. This may make a person feel frustrated, angry, or anxious, and may cause unhealthy…
Striping (RAID 0)Spreads data evenly over multiple drives to enhance performance. Because there is no redundancy scheme, it does not provide data protection.
Substrate1. A compound that is altered by an enzyme. 2. Food source for growing cells or micro-organisms. 3. Material on which a sedentary organism lives and grows.
SVCSwitched Virtual Circuit. An ATM network connection established through signaling. The user defines the endpoints when the call is initiated.
SVOLA secondary volume configured in an XP series disk array that uses Continuous Access.
switchA Java keyword used to evaluate a variable that can later be matched with a value specified by the case keyword in order to execute a group of statements.
switched virtual circuit (SVC)An ATM network connection established through signaling. The user defines the endpoints when the call is initiated.
symbolic linkAn alternate filename that points to the real "filename", which in turn points to the real "file".
SymCLIThe Symmetrix command line interface used to configure and manage EMC Symmetrix disk arrays.
symlinkA file system object that can be used to redirect a path transparently to another part of the file system. Also known as "symbolic link" or "soft link."
SynchronizationFor data streams, the process whereby a received set of data is placed in one to one correspondence with the data assumed to have been transmitted.
synchronous data replicationEach data replication I/O waits for the preceding I/O to complete before beginning another replication.
Synchronous ReplicationIn synchronous replication, each write to the primary disk and the secondary (remote) disk must be complete before the next write can begin.
system boardA printed circuit board that contains the CPU, expansion bus slots, and system memory. Also known as a "motherboard."