High Reliability - Fujitsu ETERNUS DX500 S3 Overview

Chapter 1 Overview
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Drives
The ETERNUS DX supports SAS disks, cost-efficient and high-capacity Nearline SAS disks, and very high per-
formance Solid State Drives (SSDs).
Up to 528 drives can be installed in the ETERNUS DX500 S3 and up to 1,056 drives can be installed in the
ETERNUS DX600 S3.
2.5" and 3.5" drives can be mixed in the same ETERNUS DX.
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Host Interfaces
SAN host interfaces can be selected from FC 16Gbit/s, FC 8Gbit/s, iSCSI 10Gbit/s, iSCSI 1Gbit/s, and FCoE
10Gbit/s. Up to 16 ports can be installed in a single ETERNUS DX500 S3 and up to 32 ports can be installed in
a single ETERNUS DX600 S3.
Ethernet 10Gbit/s or Ethernet 1Gbit/s can be selected for the NAS host interface. Up to 16 ports can be instal-
led in a single ETERNUS DX500 S3 and up to 32 ports can be installed in a single ETERNUS DX600 S3.
Different types of host interfaces can exist together in the same ETERNUS DX.
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Cache Capacity
The installable cache memory capacity when the storage system is used as a SAN storage system is up to
64GB for the ETERNUS DX500 S3 and up to 128GB for the ETERNUS DX600 S3.
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Model Upgrade
As a support for system scalability after installation, an ETERNUS DX can be upgraded to a higher-end model.
The ETERNUS DX500 S3 can be upgraded to the ETERNUS DX600 S3.
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High Reliability

The high reliability of the ETERNUS DX enables operations to continue even when hardware fails. The ETER-
NUS DX also protects data and provides high speed data access.
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Data Integrity
The ETERNUS DX adds check codes to all data that is saved. The data is verified at multiple checkpoints on
transmission paths to ensure data integrity.
In addition, the T10-DIF function (*2) is supported. The generated check codes and the data integrity are
checked in the transmission path to the servers in order to verify data. By linking the Data Integrity Exten-
sions (DIX) function of Oracle DB, data integrity can be ensured in the entire system including the server.
*2: T10-Data Integrity Field. SCSI specifications related to the data protection mechanism set by T10, a
Technical Committee that manages SCSI standards.
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Pro-active Monitoring
When a sign of potential drive failure is detected, the data from the suspected drive is restored to the hot
spare. When the restoration is complete, the hot spare is switched for the drive with a possible sign of drive
failure.
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Improved Connection Path Availability
Availability for data transfer paths between controllers and drives is now better than older models. Even if an
error occurs in a drive enclosure on a path, reverse cabling ensures continued access by using normal paths
to minimize the effect of the affected areas.
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Disk storage system Overview
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