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SCSI initiator and target information


In computer data storage, a SCSI initiator is the endpoint that initiates a SCSI session, that is, sends a SCSI command. The initiator usually does not provide any Logical Unit Numbers (LUNs).

On the other hand, a SCSI target is the endpoint that does not initiate sessions, but instead waits for initiators' commands and provides required input/output data transfers. The target usually provides to the initiators one or more LUNs, because otherwise no read or write command would be possible.

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SCSI initiator and target

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computer data storage, a SCSI initiator is the endpoint that initiates a SCSI session, that is, sends a SCSI command. The initiator usually does not provide...

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ISCSI

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physically cabling SCSI devices (like hard drives and tape changers), an iSCSI initiator sends SCSI commands over an IP network. An initiator falls into two...

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Parallel SCSI

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act as a SCSI target. SCSI-1 and SCSI-2 have the option of parity bit error checking. Starting with SCSI-U160 (part of SCSI-3) all commands and data are...

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SCSI

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communication takes place between an initiator and a target. The initiator sends a command to the target, which then responds. SCSI commands are sent in a Command...

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Serial Attached SCSI

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the initiator, unless an expander is used. If one initiator is connected to one target, there is no opportunity for contention; with parallel SCSI, even...

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SCSI command

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iSCSI, Serial Attached SCSI, and other transport layers. In the SCSI protocol, the initiator sends a SCSI command information unit to the target device...

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Key Code Qualifier

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returned by a SCSI device. When a SCSI target device returns a check condition in response to a command, the initiator usually then issues a SCSI Request Sense...

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Logical unit number

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LUN: In the early versions of SCSI, an initiator delivers a Command Descriptor Block (CDB) to a target (physical unit) and within the CDB is a 3-bit LUN...

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SCSI architectural model

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SCSI ports: initiator ports, target ports and target/initiator ports. A SCSI device may contain any combination of initiator ports, target ports and target/initiator...

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SCSI check condition

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SCSI device needs to report an error. SCSI communication takes place between an initiator and a target. The initiator sends a command to the target which...

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SCSI RDMA Protocol

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and an initiator (a client accessing the target) with the target initiating data transfers. In other words, when an initiator writes data to a target...

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SCSI Status Code

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execute a SCSI command. The initiator usually then issues a SCSI Request Sense command in order to obtain a Key Code Qualifier (KCQ) from the target. This...

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Bus mastering

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the implementation to set priorities. Master/slave (technology) SCSI initiator and target How Bus Mastering Works - Tweak3D What is bus mastering?- Brevard...

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Peripheral Component Interconnect

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from target to initiator) or a write (data sent from an initiator to target). PCI targets must examine the command code as well as the address and not...

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Host adapter

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host system and a peripheral SCSI device or storage system. These adapters manage service and task communication between the host and target. Typically...

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SCSI contingent allegiance condition

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SCSI connection, a contingent allegiance condition occurs while a SCSI device reports an error. SCSI communication takes place between an initiator and...

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SCSI element codes

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SCSI port/transceiver 10h - language 11h - communication port 12h - voltage sensor 13h - current sensor 14h - SCSI target port 15h - SCSI initiator port...

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ISCSI Conformance Testing and Testing Tool Requirement

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iSCSI conformance testing is testing to determine whether an iSCSI Initiator/Target meets the iSCSI standard. The Small Computer System Interface (SCSI)...

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ISCSI Extensions for RDMA

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copying on the target and initiator. The Datamover Architecture (DA) defines an abstract model in which the movement of data between iSCSI end nodes is...

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SCSI Enclosure Services

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SCSI Enclosure Services (SES) is a protocol for more modern SCSI enclosure products. An initiator can communicate with the enclosure using a specialized...

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XigmaNAS

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TFTP, AFP, rsync, Unison (file synchronizer), iSCSI (initiator and target), HAST, CARP, Bridge, UPnP, and BitTorrent. All of this is configurable through...

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Storage area network

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gateway devices, and cables. SAN network devices move data within the SAN, or between an initiator, such as an HBA port of a server, and a target, such as the...

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ATA over Ethernet

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July 2011. StarWind Free AoE Initiator for Microsoft Windows WinAoE Driver: A bootable, open source AoE initiator, EOL-ed and phased out by WinVBlock successor...

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SCST

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for processing SCSI commands. Target drivers which receive SCSI commands from a SCSI initiator, pass these SCSI to the SCST core and send back replies...

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Internet Storage Name Service

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Service (iSNS) protocol allows automated discovery, management and configuration of iSCSI and Fibre Channel devices (using iFCP gateways) on a TCP/IP network...

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Daemon Tools

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remote workstations and DAEMON Tools iSCSI Target 2 – a cross-platform solution that enables creating an iSCSI storage server and provides access to virtual...

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SCSI mode page

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SCSI target devices provide a number of SCSI mode pages. These can be interrogated by a MODE SENSE command and set by a MODE SELECT command. The MODE SENSE...

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