Fujitsu ETERNUS DX500 S3 Overview page 15

1. Overview
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Power Control
The ETERNUS DX power can be controlled when the servers are powered on and off. Scheduled operations can be
performed according to the server operation.
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Business Continuity
The ETERNUS DX supports business continuity from the two perspectives of "data protection" and "disaster con-
trol".
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Data Protection
The ETERNUS DX can continue to operate even if failures occur because the main components of the ETERNUS DX
are redundant.
If a power failure occurs, power is supplied from the battery, and cache data in the cache memory is backed up
to non-volatile memory. This protects the cache data without there being any restrictions on the number of days
that cache data is retained.
The components in the storage system are periodically diagnosed and monitored for signs of failure, which ena-
bles error components to be dealt with at an early stage.
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Backup
High speed data replication can be performed at any point in time using the Advanced Copy functions in con-
junction with software such as ETERNUS SF AdvancedCopy Manager.
Copies of the file system (snapshots) can be acquired and saved periodically in NAS environments. Depending
on the set schedule, differential data is automatically copied from the previous acquisition to that point in time.
A file restore can be performed easily from the client.
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Disaster Control
Set up the same configuration as the business site and back up the data to the remote site in order to continue
operation by switching to the remote site even when the business site fails. Backup operations can be per-
formed without interrupting business operations because backing up is performed between the storage systems
while the systems are running.
The ETERNUS DX deals with various business characteristics by allowing the selection of either the Asynchronous
mode, which emphasizes the I/O response time, or the Synchronous mode, which backs up all of the data up
until the point when a disaster occurs.
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Storage Cluster Configuration
Regarding connections with a SAN host, a cluster configuration between two ETERNUS DX/AF storage systems is
possible. Even if some trouble occurs and I/O becomes inaccessible, operations can continue by automatically
switching the access destination to the standby ETERNUS DX/AF.
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FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Overview
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