Service Guide
- D
- data port
- Ethernet ports used for storag-traffic and configuration purposes.
- domain name server
- In the Internet suite of protocols, the distributed database system used
to map domain names to IP addresses.
- DNS
- See domain name server.
- F
- free disk
- A physical disk that is not assigned as a hot-spare, standby hot-spare, or
to a logical drive.
- FTP
- file transfer protocol.
- H
- hot-spare disk
- A physical disk that is automatically mapped to a logical drive if one of
the logical drive's disks goes offline.
- I
- IDE
- integrated development environment.
- iLUN
- iSCSI client logical-unit number.
- iSCSI
- A technology that allows the SCSI transport protocol over an IP network by
connecting clients (initiators) and servers to storage.
- iSCSI client
- A device that creates and sends SCSI commands to the target IBM IP Storage
appliance.
- iSCSI client logical-unit number (iLUN)
- A unique number that is assigned to each VLUN. The iLUN for a
single client starts at zero and increments sequentially.
- L
- logical drive
- A unit of virtual storage that is made available to the network through
VLUNs and iLUNs. It is made up of one or more physical disks that are
combined using RAID 0, 1, 1E, 5, or 5E technology.
- R
- RAID
- Redundant array of independent disks.
- S
- SCSI
- See small computer system interface.
- small computer system interface (SCSI)
- A standard hardware interface that enables a variety of peripheral devices
to communicate with one another.
- standby hot-spare disk
- A physical disk that is automatically mapped to a logical drive when no
suitable hot-spare disk is available.
- T
- target
- A collection of logical units that are directly addressable on the
network. The target corresponds to the server in a client-server
model.
- V
- VLUN
- See virtual logical unit.
- virtual logical unit (VLUN)
- A subset of a logical drive.
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