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Topic: SCSI initiator


In the News (Sun 27 Dec 09)

  
  SCSI - Wikipedia, the free encyclopedia
SCSI stands for "Small Computer System Interface", and is a standard interface and command set for transferring data between devices on both internal and external computer buses.
This change divorces SCSI's various interfaces from the command set, allowing devices that support SCSI commands to use any interface (including ones not otherwise specified by T10), and also allowing the interfaces that are defined by T10 to develop on their own terms.
A SCSI enclosure without a backplane often has a switch for each drive in the enclosure to choose the drive's SCSI ID. The way this works is that the enclosure has a connector that you plug into the drive where jumpers are supposed to go; the switch emulates the necessary jumpers.
en.wikipedia.org /wiki/SCSI   (3247 words)

  
 RFC 4455
SCSI is a client-server protocol in which application clients within a SCSI initiator device (client) issue service requests to logical units contained in a SCSI target device(server).
SCSI Port A SCSI port is a device-resident entity that connects the application client, device server, or task manager to the service delivery subsystem through which requests and responses are routed.
SCSI Initiator Port A SCSI initiator port acts as the connection between application clients and the service delivery subsystem through which requests and responses are routed.
www.faqs.org /rfcs/rfc4455.html   (6779 words)

  
 SCSI - tScholars.com   (Site not responding. Last check: 2007-10-03)
SCSI has the unfortunate distinction of having among the most confusing set of standards names of anything in the computer field, with the probable exception of 3D video cards.
Each SCSI device (including the computer's host adapter) must be configured to have a unique SCSI ID on the bus.
The target (disk-drive) SCSI IDs are either set by physical jumpers or by control signals which vary for each connector on a backplane.
www.tscholars.com /encyclopedia/SCSI   (2486 words)

  
 Basic SCSI Terms - SCSI Masters.com
A signal on differential SCSI cabling (Pin 21 on NARROW and pin 16 on WIDE) that is used as an active HIGH enable for differential drivers.
A result of the "intelligence" of SCSI that allows a device to disconnect from the bus while it is performing a task, such as locating some information at a specific address, and, once it has located the information, reconnect to the bus in order to complete its task.
A result of the "intelligence" of SCSI that allows an initiator or target to disconnect from the bus while it is performing a task, such as locating some information at a specific address, and, once it has located the information, reconnect to the bus in order to complete its task.
www.scsimasters.com /basicterms.html   (3421 words)

  
 RFC 3783 (rfc3783) - Small Computer Systems Interface (SCSI) Command Order
To summarize, SCSI command streaming, when coupled with the guarantee of ordered command execution on the SCSI target, is extremely valuable for a critical class of applications in long-latency networks.
SCSI commands from the initiator to the target are carried in iSCSI requests called SCSI Command PDUs.
SCSI Data- out from the initiator to the target is carried in SCSI Data-Out PDUs, and the SCSI Data-in back to the initiator is carried in SCSI Data-in PDUs.
www.faqs.org /rfcs/rfc3783.html   (3507 words)

  
 SCSI - An Introduction   (Site not responding. Last check: 2007-10-03)
A SCSI bus's geographic reach and speed of data transfer is dependent upon the particular physical configuration chosen.
SCSI is the predominant high-speed bus technology used to interconnect systems to peripheral devices and to build peripheral subsystems.
SCSI originated as a standard means to support device independent, reliable, high-speed data transfer between any two devices interconnected on a shared bus.
www.cs.unca.edu /~benites/scsi   (4369 words)

  
 SCSI MIB
Contains the list of remote initiator ports that are authorized to be attached specific target ports and on which an administrator would like to keep permanent information and long term statistics even when not currently attached.
This table includes all the authorized initiator devices or ports that may attach a target device or port of the local SCSI entity and that may interest an administrator, like statistics.
An entry (row) represents a remote initiator currently attached to a particular local target port of a particular target device of a particular SCSI entity.
www.cisco.com /univercd/cc/td/doc/product/sn5000/mds9000/1_0_3/mibs/scsi.htm   (4061 words)

  
 ZyckoStorage - iSCSI   (Site not responding. Last check: 2007-10-03)
A command sent by an initiator (server) to a specific logical unit (target) could be a command to read a specified number of data blocks.
SCSI communication over iSCSI is defined by the SCSI Architectural Model (SAM-2) where iSCSI implements a client-server model between storage targets and initiator servers.
Since iSCSI targets and initiators are on an IP network they must conform to the clients/server model and this means having a Network Entity identity which is equivalent to the IP addresses they are assigned.
www.zycko.com /storage/Technologies/iSCSI.asp   (982 words)

  
 [No title]
SCSI is a client-server protocol in which application clients within an initiator device (client) issue service requests to logical units contained in a target (server).
Expires August 2003 [Page 6] SCSI MIB February 2003 A SCSI port is a device-resident entity that connects the application client, device server or task manager to the service delivery subsystem through which requests and responses are routed.
However if the SCSI targets, or virtualized targets, are being provided as a service, it is more likely that the provider of the service owns and manages the targets, and that the consumer of the service owns and manages the initiators.
www3.ietf.org /proceedings/03jul/I-D/draft-ietf-ips-scsi-mib-05.txt   (7725 words)

  
 [No title]
The SCSI protocol is a client-server protocol allowing an application layer client to transmit commands to a device server and to a task manager using an interconnect subsystem.
As SCSI devices may contain more than one SCSI entity, it is possible that more than one SCSI MIB instance, and its respective agent, will reside in a single device.
As the SCSI Target and SCSI Initiator device are interconnected, their Target and Initiator port objects will be complementary.
www.ietf.org /proceedings/02mar/I-D/draft-ietf-ips-scsi-mib-02.txt   (5523 words)

  
 AMIDiag - Industry Standard PC Diagnostics
SCSI ports are built into most personal computers today and supported by all major OSes.
SCSI allows up to seven or 15 devices (depending on the bus width) to be connected to a single SCSI port in daisy-chain fashion.
The latest SCSI standard is Ultra-3 (sometimes spelled "Ultra3")which increases the maximum burst rate from 80 Mbps to 160 Mbps by being able to operate at the full clock rate rather than the half-clock rate of Ultra-2.
www.amidiag.com /support/glossary.cfm   (11674 words)

  
 Extended SCSI MIB
The ciscoExtScsiStartLunDisc object is the trigger by which discovery of LUNs and SCSI targets is triggered.
Once ciscoExtScsiStartLunDisc object is set appropriately, all the LUNs and SCSI targets are discovered (as per the specified scope) and the ciscoScsiIntrDiscoveredTgtTable and the ciscoScsiIntrDscLunsTable, ciscoScsiIntrDscLunIdTable are populated with the target devices/ports and the target LUNs.
If this object is set to 'startRemoteDiscovery', then all SCSI target devices/ports and LUNs associated with them on all VSANs in the whole fabric, except the directly attached ones, will be discovered.
www.cisco.com /univercd/cc/td/doc/product/sn5000/mds9000/1_1/mibs/ext_scsi.htm   (749 words)

  
 Small Computer System Interface - SCSI
Unlike competing standards, SCSI is capable of supporting eight devices, or sixteen devices with Wide SCSI.
SCSI, pronounced as Scuz-zee, is a standard for parallel interfaces that transfers information at a rate of eight bits per second and faster, which is faster than the average parallel interface.
SCSI ports were designed for Apple Macintosh and Unix computers, but also can be used with PCs.
www.computerhope.com /jargon/s/scsi.htm   (227 words)

  
 RE: VM, scsi-initiator-id and boot -r   (Site not responding. Last check: 2007-10-03)
Let me try to clarify: It is true that Sun does not support two or more hosts attached to the same array except in a Sun Cluster situation.
The problem with having two hosts connected without cluster is that a SCSI reset can effect every device in the chain, including the hosts.
Potentially if one host reboots it can send a SCSI reset to the other host and cause it to reset crash or hang.
www.eng.auburn.edu /pub/mail-lists/ssa-managers.Mar00/msg00010.html   (742 words)

  
 Documentation
Connectivity – SCSI devices may be attached to Fibre Channel storage networks to share data and increase address space.
The bridge is both a SCSI and Fibre Channel device operating on a SCSI bus and Fibre Channel network simultaneously.
On a SCSI bus, the PowerVault 35F acts as a SCSI initiator passing requests from hosts on the Fibre Channel network to target devices on the SCSI bus.
support.dell.com /support/edocs/stor-sys/spv35f/ug/intro.htm   (757 words)

  
 SCSI initiator Computer Encyclopedia Enterprise Resource Directory Complete Guide to Internet   (Site not responding. Last check: 2007-10-03)
SCSI initiator Computer Encyclopedia Enterprise Resource Directory Complete Guide to Internet
A device that begins a {SCSI} transaction by issuing a command to another device (the {SCSI target}), giving it a task to perform.
Typically a SCSI host adapter is the initiator but targets may also become initiators.
www.jaysir.com /computer-encyclopedia/s/scsi-initiator-computer-terms.htm   (58 words)

  
 Complete Information about iSCSI, SCSI, RAID, SAS and related subjects - David Woodsmall
SCSI Pinouts SCSI All pinouts and some information about pinouts SCSI2 Pinouts - 50 pin header) to an external DB25 connector SCSI cable Cautions
SCSI - infoslurp SCSI - info-en SCSI - fi
SCSI - copernicus SCSI - arikah SCSI - biocrawler SCSI - rantoul
home.nc.rr.com /woodsmall/SCSI.htm   (1470 words)

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