Hitachi 9900 manual Scsi, Sla, Snmp, Svp, Swan

Hitachi Data Systems

SCSI

Small Computer System Interface. An intelligent bus-level interface that defines a standard I/O bus and a set of high-level I/O commands. There are currently many flavors of SCSI defined by different bus widths and clock speeds. The seven major variations of SCSI are SCSI 1, SCSI 2 (Fast/Narrow), SCSI 2 (Fast/Wide), Ultra SCSI (Fast/Narrow), Ultra SCSI (Fast/Wide) – also called SCSI 3, Ultra 2 SCSI (Narrow), Ultra 2 SCSI (Wide). See also Fibre Channel.

Serverless Backup

Using the eXtended SCSI command, and products like VERITAS ® NetBackup™, the Hitachi Freedom Storage™ Lightning 9900™ V Series offers serverless and LANfree backup.

SLA

Service level agreements or SLAs are agreements regarding level of service between user departments and the IT department. SLAs refer to all aspects of IT service, including availability, performance, and repair.

Snapshot

A term that refers to a copy of a file system at a certain point in time. Snapshots are used for backup and recovery.

SNMP

Simple Network Management Protocol. SNMP is a protocol used for communication between simple, server-resident SNMP agents that respond to network administration requests from simple-to-sophisticated SNMP manager tools running on remote workstations.

Solaris

The Sun™ UNIX® operating system based on System V, release 4.

Stripe

In RAID terminology, a stripe is when data is read or written in parallel to or from multiple disks instead of reading or writing all data to one disk. Striping provides much higher performance through its parallel design.

SVP

Service Processor of the Lightning 9900 V Series.

SWAN

Storage Wide Area Networks (SWANs) are interconnected SANs over long distances. They are made possible by Fibre Channel and ESCON® extenders.

72