Fujitsu Eternus DX60 User Manual page 24

Chapter 1 Overview
> 1.1 System Features
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Data integrity with high-speed backup
• Nearline SAS disks for data backup and archiving
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• Backup function
Using the Advanced Copy function allows the high-speed copying of disk volumes at any
given time.
• Data integrity against disasters
Using the Remote Advanced Copy functions (enhanced Advanced Copy functions), data can
be copied between multiple ETERNUS DX90s without burdening the server. In addition, using
the Extended Remote Advanced Copy functions, data can be copied between ETERNUS
DX90s in the remote place that are connected with SAN-WAN-SAN topology, which enables
duplication of database and backup to a remote place in the case of disaster.
High reliability supports 24/7/365 operation
• Duplication of important components
Important components such as controllers (for dual-controller model), power supply units, and
fans are duplicated to continue the operation in the case of unexpected failure. Also this
allows the hot swapping of failed components with the device power on. In addition, the latest
firmware can be applied during system operation.
• Various supported RAID levels
The ETERNUS DX60/DX80/DX90 supports RAID5+0 that is superior to RAID5 in reliability
and performance, and RAID6 that responds to the double failure of disks, as well as RAID1,
RAID1+0, and RAID5. A flexible RAID configuration can be selected.
• Redundant copy ensures disk redundancy
The ETERNUS DX60/DX80/DX90 diagnostic routines test the disks in order to predict failures
before they happen. When a disk requires preventive maintenance, a hot spare is
automatically switched in to replace it, providing continued data redundancy and stable
operation.
• Block Guard ensures data integrity
The ETERNUS DX60/DX80/DX90 adds check codes and check them at multiple checkpoints
on data transfer path to ensure the data integrity.
P3AM-3042-06ENZ0 ETERNUS DX60/DX80/DX90 Disk storage system User Guide
The ETERNUS DX60/DX80/DX90 supports multiple Operating Systems such as UNIX,
Linux, Windows®, and VMware®, and can be connected as a storage system for
PRIMEQUEST, SPARC Enterprise, PRIMERGY servers as well as for UNIX/IA servers of
other companies. Also the RAID aggregation using SAN (Storage Area Network) is
available.
Using large capacity / cost effective Nearline SAS disks allows low cost D2D (Disk to Disk)
backup and high-speed recovery in the case of unexpected failure.
Storing the less frequently accessed data such as archive data in the Nearline SAS disks
allows easy reading. Nearline SAS disks and SAS disks can be installed in the same drive
enclosure.
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