Hp Storage Mirroring Software Bedienungsanleitung PDF herunterladen (Seite 6)

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Introduction

Welcome to Storage Mirroring

for Linux

! Storage Mirroring is a

real-time data replication and failover software product. Storage

Mirroring augments your existing data protection strategy by

reducing downtime and data loss, and it provides these services with

minimal impact on existing network and communication resources.

Storage Mirroring allows you to specify mission-critical data that must be protected and replicates,

in real-time, that data from a production server, known as the source, to a backup server, known as

the target. The target server, on a local network or at a remote site, stores the copy of the critical

data from the source. Storage Mirroring monitors any changes to the critical data and sends the

changes to the target server. By replicating only the file changes rather than copying an entire file,

Storage Mirroring allows you to more efficiently use resources.

 Offsite disaster recovery services—No business is immune from the many disasters - disk

crashes, power failures, human error, natural disasters - that will inevitably stop the flow of data

at one or more of your facilities. Tape-based disaster recovery can only restore data to the point

of the last backup, which was most likely the prior night. Any data created since the last backup

will be lost. An effective disaster recovery plan requires a comprehensive data protection plan,

including Storage Mirroring continuous data replication.

Storage Mirroring can be combined with your existing tape backup solution for a more

comprehensive disaster recovery plan. Storage Mirroring is a disaster recovery software based

on asynchronous real-time replication and automatic failover to provide cost-effective business

continuity for Microsoft

Exchange, Microsoft SQL Server

, Oracle

, virtual systems, file

servers, and many other applications. Storage Mirroring provides continuous data protection by

sending an up-to-the-minute copy of the data as it is being changed to the target server.

Features such as built-in bandwidth control allows data to be replicated to a remote source, far

from harms way of a disaster such as hurricanes, tornadoes, and brown-outs. That same

bandwidth control allows data to be restored within minutes.

 Local high availability services—As businesses come to increasingly depend on continuous

access to their data, ensuring that their data is available on-demand is of paramount importance.

Traditional solutions, such as tape backup and hardware mirroring, are not without flaws. Tape

backup poses a potential risk in that data backups must be performed when the system is idle,

meaning that as much as a day's worth of data could be lost. Tape recovery time can also be below

many business's recovery time objectives (and does not provide high availability).

A more cost-effective answer to a high availability solution is asynchronous host-based

replication for high availability. Support for non-proprietary hardware and storage systems

means you can leverage your existing resources. You will also get real-time data protection

without distance limitations, ensuring high availability for all your business-critical applications,

including e-mail. Real-time data replication at the byte level, regardless of application, is a much

more efficient use of computing and bandwidth resources for high availability. With Storage

Mirroring all of your applications can have cost-effective, real-time data protection and high

availability.

 Enhanced centralized backup—The rapid growth in storage brought on by the Internet and

distributed computing has placed nearly impossible demands on administrators responsible for

protecting corporate data assets. The backup window has shrunk to nearly zero and tape backup

systems can introduce significant overhead to a production server, seriously impacting its

performance. While the importance of backups increases, the impact of periodic full system

backups is obvious. Even nightly incremental backups dominate processing while they examine

every file system object and then read all files that have changed in their entirety for backup.

Performing this process across a network adds additional overhead as the entire process happens

across the wire.

These days permanent point in time storage and recovery, like that provided by periodic tape

backup, is required. And despite the fact that Storage Mirroring cannot provide a way to retrieve

historical file versions or files that may have been previously deleted by users, Storage Mirroring

can enhance the backup process by continuously replicating critical data to centralized servers

and using tape backup systems to backup the replica rather than the production servers. Using

Storage Mirroring offloads the burden of periodic tape backups from multiple production servers

to a dedicated backup server and makes centralized tape backup a reality, significantly reducing

management cost and improving reliability. Regardless of a file’s state on the source, on the

target every file is closed and available for consistent backup at any point in time.

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