architectures. Fusion-MPT architecture offers a single binary, operating

 

system driver that supports both Fibre Channel and SCSI devices.

host

The computer system in which a storage adapter is installed. It uses the

 

storage adapter to transfer information to and from devices attached to

 

the SCSI bus.

host adapter

A circuit board or integrated circuit that provides a device connection to

board

the computer system.

hot spare

An idle, powered on, standby drive ready for immediate use in case of

 

disk failure. It does not contain any user data. A hot spare can be

 

dedicated to a single redundant array or it can be part of the global

 

hot-spare pool for all arrays managed by the controller.

 

When a disk fails, the controller firmware automatically replaces and

 

rebuilds the data from the failed drive to the hot spare. Data can be

 

rebuilt only from virtual disks with redundancy (RAID levels 1, 5, 10, and

 

50; not RAID level 0), and the hot spare must have sufficient capacity.

internal SAS

A SAS device installed inside the computer cabinet. These devices are

device

connected by using a shielded cable.

main memory

The part of a computer’s memory which is directly accessible by the CPU

 

(usually synonymous with RAM).

NVRAM

Acronym for Nonvolatile Random Access Memory. An EEPROM

 

(Electronically Erasable Read-Only Memory chip) that stores

 

configuration information. Refer to EEPROM.

PCI

Acronym for Peripheral Component Interconnect. A high-performance,

 

local bus specification that allows the connection of devices directly to

 

computer memory. The PCI Local Bus allows transparent upgrades from

 

32-bit data path at 33 MHz to 64-bit data path at 33 MHz, and from 32-bit

 

data path at 66 MHz to 64-bit data path at 66 MHz.

PCI Express

Acronym for Peripheral Component Interconnect Express. A

 

high-performance, local bus specification that allows the connection of

 

devices directly to computer memory. PCI Express is a two-way, serial

 

connection that transfers data on two pairs of point-to-point data lines.

 

PCI Express goes beyond the PCI specification in that it is intended as

 

a unifying I/O architecture for various systems: desktops, workstations,

 

mobile, server, communications, and embedded devices.

A-2

Glossary of Terms and Abbreviations

 

Copyright © 2006-2007 by LSI Corporation. All rights reserved.

Page 48
Image 48
IBM MegaRAID 8480 manual Host adapter, Board, Hot spare, Internal SAS, Device, Main memory, PCI Express

MegaRAID 8480 specifications

The IBM MegaRAID 8480 is a high-performance RAID (Redundant Array of Independent Disks) controller designed for enterprise-class storage environments. It delivers advanced data protection, high availability, and exceptional scalability, making it an ideal choice for businesses that require robust data management solutions.

One of the main features of the IBM MegaRAID 8480 is its support for both SAS (Serial Attached SCSI) and SATA (Serial ATA) drives, providing flexibility in storage configurations. This controller supports up to 128 devices, allowing organizations to build large, efficient storage arrays that can accommodate extensive data needs.

The MegaRAID 8480 utilizes advanced RAID levels, including RAID 0, 1, 5, 6, 10, 50, and 60, enabling users to select the level of data redundancy and performance that best fits their specific requirements. The controller also supports online capacity expansion and RAID level migration, ensuring that users can seamlessly adapt their storage configurations as their business evolves.

In terms of performance, the MegaRAID 8480 is equipped with 8GB of DDR4 cache memory, which significantly enhances data access speeds and provides improved I/O performance. With the ability to process a large number of transactions simultaneously, this controller is well-suited for demanding enterprise applications, such as database management systems and virtualized environments.

To further enhance data protection, the MegaRAID 8480 features battery-backed write cache technology. This ensures that data in the cache is not lost in the event of a power failure, safeguarding critical information. Furthermore, the MegaRAID SafeStore technology offers additional protection through encryption-key management, which helps safeguard sensitive data from unauthorized access.

Another notable characteristic is the intuitive management interface provided by the MegaRAID Storage Manager software. This tool streamlines storage monitoring and enables users to easily manage their RAID configurations. Additionally, the controller supports advanced diagnostic features that assist administrators in identifying and resolving potential issues before they escalate.

The IBM MegaRAID 8480 is designed for the modern data-driven enterprise, combining performance, reliability, and scalability into a comprehensive storage solution. With its robust set of features and cutting-edge technology, it empowers organizations to enhance their data management strategies while ensuring that their critical applications remain available and secure. This makes the MegaRAID 8480 a standout choice for businesses seeking to future-proof their storage infrastructure.