3Ware 7506-8 User Guide - Page 15

Introduction, Unmatched reliability and performance - linux

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Introduction Unmatched reliability and performance The Escalade 7000 and 8000 series of ATA RAID Controllers bring new levels of reliability to ATA RAID through a patented switched architecture that exceeds the reliability of SCSI shared-bus storage systems. The shared bus architecture of SCSI has inherent performance limitations due to arbitration latency and only one drive may use the bus at any given time. Further, a single drive failure can bring the entire storage system down. In this scenario, SCSI RAID features fail to make the data available. The Escalade 7000 and 8000 series uses a non-blocking switched architecture to isolate the drives from one another. Any drive failure makes that drive unavailable and the rest of the storage system remains undisturbed. In addition, 3ware has implemented Advanced Data Protection (ADP) features that further protect data from loss. In ADP Level-1, all drive commands are checked to ensure that no command corruption has taken place over the entire data path, guaranteeing that the command and data reach the drive correctly. 3ware's 3DM™, a web-based storage management utility, sends notification of drive failures via email and audible alerts, providing the system administrator with local and remote asynchronous event reporting of array activities. Some of the Escalade features and benefits include: ■ Non-blocking switch technology with RAID 5 parity ■ On-board processor minimizes host CPU overhead ■ SCSI device driver for O/S compatibility and easy installation ■ Browser-based 3ware Disk Manager (3DM) utility with password security for network management of 3ware storage arrays ■ Command line interface (CLI) for Windows and Linux (available from the 3ware website at http://www.3ware.com/support/download.asp, and described in 3ware Escalade Command Line Interface User Guide) www.3ware.com 7

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www.3ware.com
7
Introduction
Unmatched reliability and performance
The Escalade 7000 and 8000 series of ATA RAID Controllers bring new
levels of reliability to ATA RAID through a patented switched architecture
that exceeds the reliability of SCSI shared-bus storage systems. The shared
bus architecture of SCSI has inherent performance limitations due to
arbitration latency and only one drive may use the bus at any given time.
Further, a single drive failure can bring the entire storage system down. In this
scenario, SCSI RAID features fail to make the data available.
The Escalade 7000 and 8000 series uses a non-blocking switched architecture
to isolate the drives from one another. Any drive failure makes that drive
unavailable and the rest of the storage system remains undisturbed. In
addition, 3ware has implemented Advanced Data Protection (ADP) features
that further protect data from loss. In ADP Level-1, all drive commands are
checked to ensure that no command corruption has taken place over the entire
data path, guaranteeing that the command and data reach the drive correctly.
3ware’s 3DM™, a web-based storage management utility, sends notification
of drive failures via email and audible alerts, providing the system
administrator with local and remote asynchronous event reporting of array
activities. Some of the Escalade features and benefits include:
■
Non-blocking switch technology with RAID 5 parity
■
On-board processor minimizes host CPU overhead
■
SCSI device driver for O/S compatibility and easy installation
■
Browser-based 3ware Disk Manager (3DM) utility with password secu-
rity for network management of 3ware storage arrays
■
Command line interface (CLI) for Windows and Linux (available from
described in
3ware Escalade Command Line Interface User Guide
)