Sun Storage J4200/J4400 Array System Overview
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Glossary |
Definitions obtained from the Storage Networking Industry Association (SNIA) Dictionary are indicated with “SNIA” at the end. For the complete SNIA Dictionary, go to www.snia.org/education/dictionary.
A type of event that requires service action. See also event.
A subtype of an event that requires user intervention. The term actionable event often describes an alert. See also event.
The amount of data sent or received by the host per I/O operation; the size of a data unit.
The amount of available physical capacity, whether of a disk, a tray of disks, or an interconnected environment with several trays of disks.
The command-line interface used to manage and monitor the software and hardware.
The route used for communication of system management information, in the case of the J4200/J4400 Array, this is the in-band connection.
customer-replaceable unit (CRU)
An assembly component that is designed to be replaced on site by a customer, without the array having to be returned to the manufacturer for repair; for example, a SIM board, a power supply, a fan, a rail.
See customer-replaceable unit (CRU).
Any host that uses the array for storage. A data host is connected directly to the device. See also host.
The route taken by a data packet between a data host and the storage device.
A storage architecture in which one or two hosts that access data are connected physically to a storage array.
A physical drive component that stores data.
A notification of something that happened on a device. There are many types of events, and each type describes a separate occurrence. See also alarm and alert.
A set of contiguous blocks with consecutive logical addresses on a physical or virtual disk.
The process of changing the data path automatically to an alternate path.
The percentage of faults detected against all possible faults or against all faults of a given type.
As a function of the Sun Storage J4200/J4400 Array configuration, a data host connected to the device using an HBA.
An I/O adapter that connects a host I/O bus to a computer’s memory system. Abbreviated HBA. Host bus adapter is the preferred term in SCSI contexts.
Software management traffic that uses the data path between a host and a storage device.
A measure of transaction speed, representing the number of input and output transactions per second.
A host serving the management and monitoring software for the Sun Storage J4200/J4400 Array. The software can be controlled from a standalone Java graphical user interface (GUI) or a command-line interface (CLI) client.
A design for redundancy that provides at least two physical paths to a target.
The assembly that provides power management for the array. The redundant design uses two power supplies in each array so that the array’s data path continues to function if one of the power supplies fails.
The process of allocation and assignment of storage to hosts.
An acronym for Redundant Array of Independent Disks, a family of techniques for managing multiple disks to deliver desirable cost, data availability, and performance characteristics to host environments. Also, a phrase adopted from the 1988 SIGMOD paper, A Case for Redundant Arrays of Inexpensive Disks.
Monitoring of the functions and performance of a hardware system from a location other than where the hardware resides.
An architecture in which the storage elements are connected to each other and to a server that is the access point for all systems that use the SAN to store data.
An enclosure containing disks.
The number of blocks in a stripe. A striped array’s stripe size is the stripe depth multiplied by the number of member extents. A parity RAID array’s stripe size is the stripe depth multiplied by one less than the number of member extents. See also striping.
Short for data striping; also known as RAID Level 0 or RAID 0. A mapping technique in which fixed-size consecutive ranges of virtual disk data addresses are mapped to successive array members in a cyclic pattern. (SNIA).
The system component that receives a SCSI I/O command. (SNIA).
See storage tray.
| Sun Storage J4200/J4400 Array System Overview
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