HP StorageWorks 4/8 Brocade SAN Glossary for Fabric OS v6.0.0
HP StorageWorks 4/8 - SAN Switch Manual
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- HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 1
STORAGE AREA NETWORK Brocade SAN Glossary A ABTS ACC Access fairness Access method ACK Active copper Adaptive Networking AD0 AD255 AD zone database Address identifier Abort Basic Link Service. Accept link service reply; the normal reply to an Extended Link Service request (such as FLOGI), - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 2
the blade contains a different version of the firmware, regardless of which version is older. Autoleveling downloads the firmware to the embedded switch, swaps partitions, reboots the switch, and copies the new firmware from the primary partition to the secondary partition. Brocade SAN Glossary - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 3
port LEDs on a switch are set to flash from one side of the switch to the other to enable identification of an individual switch Brocade 2 Gbit/sec ASIC. This ASIC is used in Brocade switches 3000 series and beyond. Broadcast Sending a transmission to all Nx_Ports on a fabric. Boot code Software - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 4
Content-Addressable Memory. Connecting two or more Fibre Channel hubs or switches to increase port capacity or distance. Seven levels of cascading is the limit for Brocade switches. Brocade 1000 switches can have up to 32 in a SAN; Brocade 2000 switches and above can have up to 239. Clock and Data - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 5
of the peripheral device. The default PID mode for Brocade 200E, 3016, 3250, 3850, 3900, and 4100 switches and Brocade directors. It uses the entire 8-bit address space and directly uses the port number as the area_ID. Class of service. Cyclic Redundancy Check. A self-test for error detection and - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 6
and scalable Fibre Channel switch that uses a chassis and blade architecture; current models are Brocade 24000 Director and Brocade 48000 Director. Discovery domain An iSCSI access control concept; created between iSCSI hosts and targets using their IQN. Brocade SAN Glossary 1/29/2008 Page - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 7
Brocade 2000 Series or later switch that identifies the switch to a fabric. Dynamic Ports On Demand (DPOD) Automatically enables ports on an embedded blade when the server is powered can be active at a time Service. Sent to the destination N_Port to perform the requested function or service - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 8
on switches with 16 or fewer ports as would native PID format, but it also supports up to 256 ports per domain. Extended Fabrics Optionally licensed Fabric OS feature that provides up to 500 km of switched fabric connectivity at full bandwidth over long distance. Extent A range of logical blocks - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 9
supports FAN. 2) File Area Network. The set of systems and software that enable centralized management of file data to improve user and administrative efficiency. Fan-in The ratio of hosts to storage devices. It is the view of the SAN from the storage port FC Routing Service A service that - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 10
FC-SW Fibre Channel Switch Fabric. Specifies tools and algorithms for interconnection and initialization of Fibre Channel switches to create a multiswitch Service A service that enables SANs to span longer distances than could be supported with native Fibre Channel links. FCIP is a TCP/IP-based - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 11
building SANs. Unlike IP and Ethernet, Fibre Channel was designed to support the needs FCRP) A Brocade-authored standards-track protocol that enables LSAN switches to perform power. FLOGI Fabric login. A process by which a node makes a logical connection to a fabric switch. F_Port A fabric port - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 12
update messages from active components to their peer standby components. The Brocade software license that allows multiple E_Ports on a switch. Concurrent transmission and and software. Gigabit Ethernet port available on some Brocade switches; supports FCIP and FC Channel Routing Service features - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 13
replaced while under power. High Speed Switches and directors active link. It helps maintain bit, byte, and word synchronization. Internet Fibre Channel Protocol. Supports FC Layer 4 FCP-Over-TCP/IP; a gateway-to-gateway protocol in which TCP/IP switching licensed fabric service that restricts the - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 14
iSCSI Internet Small Computer System Interface. An IP-based storage networking standard. iSCSI Gateway Service A service that maps the SCSI protocol to the IP transport. This service projects iSCSI hosts onto the backbone fabric of a gateway switch. iSCSI PDU iSCSI Protocol Data Unit. A message - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 15
Previously Assigned. A situation in which the device marks a bit in the bitmap if it had not logged in with the fabric in a previous loop initialization. Brocade SAN Glossary 1/29/2008 Page 15 of 29 - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 16
to the second-generation Brocade fabric ASIC, used in the Brocade 2000 series of switches. Loop circuit A only in Arbitrated Loops. L_Port Loop port. A port supporting the Arbitrated Loop protocol. It appears as the part of the Idle. Brocade SAN Glossary 1/29/2008 Page 16 of 29 - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 17
the port WWN (pWWN) of the array and the LUN from the standpoint of the virtual initiators. Logical Unit Number. The path to an LU or the 64-bit address of the LU. Mapping between a virtual iSCSI target and physical FC target. Long Wavelength fiber-optic; based on 1300 and 1550-nm lasers supporting - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 18
Service, the iSCSI Gateway Service, and the FCIP Tunneling Service. Multiprotocol SAN Routing Services (MSRS) An optionally licensed software bundle available on certain Brocade platforms, such as the Brocade with the Brocade 2000 series switches, supports up to 16 ports per switch. NDMP Network - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 19
supports one or more ports. Node count The number of nodes attached to the fabric. Node name A 64 that the transmitting port has detected ports providing separate port port. NR_Port A port switches as a background task. Nx_Port Node port the transmitting port is attempting to or more ports on - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 20
resource than the resource could simultaneously support (typically an ISL). Over-subscription could Board Assembly. Performance Monitoring A Brocade switch feature that monitors port traffic and includes frame counters, PID Port identifier. PKI Public Key Infrastructure. An infrastructure based - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 21
licensed feature available on certain Brocade switches; when switches are shipped with some but not all of the physical ports activated, a POD license can be used to activate some or all of the remaining ports. POST Power On Self Test. A routine that the switch performs to test its components - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 22
port will take which egress port; configuration must be performed at the director ." PSU Power Supply Unit. Public device A device that supports loop and Brocade software product that allows multiple ports on a switch port is ready to receive a frame. Brocade SAN Glossary 1/29/2008 Page 22 of 29 - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 23
checking. Redundant Array of Independent Tapes. RBAC Role-Based Access Control. Receiver A device that does detection to specific switch ports, according to frame destination. RSCN Registered State Change Notification. A switch function that . Brocade SAN Glossary 1/29/2008 Page 23 of 29 - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 24
each of which has a topology. The number of ports available for connection by nodes in the entire SAN. One of the properties of a SAN; the size to which the SAN topology can grow port and switch counts with ease. Brocade Storage Application Services. SC Connector. A fiber-optic cable connector that - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 25
switch in the path between a given configured device pair. See also QoS. SilkWorm A former brand name for the Brocade family of switches and directors of service the frame will use. Software-enforced zoning A method of zoning in which members are defined using both WWNs and domain, port; prevents - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 26
disks on a block-by-block basis, with or without parity. Switch A fabric device providing bandwidth and high-speed routing of data via linklevel addressing. SWL Short Wavelength fiber optic; based on 850-mm lasers supporting 1.0625-Gbit/sec link speeds. T T10 T11 Tachyon Tape Pipelining - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 27
of up to eight ISLs between adjacent switches, while preserving in-order delivery. Trunk group A set of ports that share traffic to a destination domain. Bloom-based switches supported trunk groups of up to four ISLs. Condor and GoldenEye based switches support trunk groups of up to eight ISLs - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 28
WAN_TOV WDM Web Tools Well-known address Universal Port. A port that can operate as a G/E/F/FL_Port. All Brocade 2xxx series switches and beyond contain Universal Ports to allow any device to connect to any port. Selection of actual port type is automatic. User Datagram Protocol. A protocol that - HP StorageWorks 4/8 | Brocade SAN Glossary for Fabric OS v6.0.0 - Page 29
Name. A 64-bit unique identifier for nodes and ports in a fabric. Defines a zone member using WWN port or WWN SAN device. Defining . A feature in fabric switches or hubs that allows segmentation of a node by physical port, name, or address. © 2008 Brocade Communications Systems, Inc. All
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Brocade SAN Glossary
1/29/2008
Page 1 of 29
STORAGE AREA NETWORK
Brocade SAN Glossary
A
ABTS
Abort Basic Link Service.
ACC
Accept link service reply; the normal reply to an Extended Link Service
request (such as FLOGI), indicating that the request has been completed.
Access fairness
A process by which contending nodes are guaranteed access to an
Arbitrated Loop.
Access method
The method used to access a physical medium in order to transmit data.
ACK
Acknowledgement frame. Used for end-to-end flow control; verifies receipt of
one or more frames from Class 1, 2 or F services.
Active copper
A Fibre Channel connection that allows copper cabling up to 33 m (108 ft) in
length between devices.
Adaptive Networking
A suite of fabric services introduced in Fabric OS 6.0 that employ deep fabric
intelligence to anticipate congestion and to dynamically make adjustments
in the fabric so that application traffic continues to flow.
See also
QoS,
Ingress Rate Limiting, and Traffic Isolation.
AD0
A special administrative domain. When an AD-capable switch is first added
to a fabric, all relevant resources of the fabric (switches, ports, devices)
become its members automatically. These resources are put in an implicit
list as defined later. When members are added to AD0 explicitly they become
part of the explicit list as fixed members.
AD255
An administrative domain that allows users to get an unfiltered view of the
fabric and manage ADs. Corresponds to the legacy physical fabric in a non-
AD aware fabric.
AD zone database
The zone database owned by each AD. Once Fabric OS 5.2.0 and later is
installed, the root zone database will be owned by AD0, and each AD will
have its own zone database.
Address identifier
A 24-bit number used to indicate the link-level address of communicating
devices. In a frame header, the address identifier indicates the source ID
(S_ID) and the destination ID (D_ID) of the frame respectively.