Function Specification List

The ETERNUS DX provides various functions to ensure data integrity, enhance security, reduce cost, and optimize the overall performance of the system.

These functions enable users to respond to problems from various situations.

For the ETERNUS DX, basic functions are used during normal operation and expansion functions are used in certain situations.

For details on the basic functions, refer to Basic Functions. For the expansion functions, refer to Expansion Functions.

Table: Basic Functions
Overview	Function
Overview	Function	Data protection Functions that ensure data integrity to improve data reliability. It is possible to detect and fix drive failures early.	Data Block Guard Disk Drive Patrol Redundant Copy Rebuild Fast Recovery Copyback/Copybackless Shield Reverse Cabling
Resource utilization (virtualization/Automated Storage Tiering) Functions that deliver effective resource utilization.	Thin Provisioning Flexible Tier Extreme Cache Pool
Data capacity expansion Functions that expand or relocate a RAID group or a volume in order to flexibly meet any increases in the amount of data. Guarantee of performance Functions that create a volume that is striped in multiple RAID groups in order to improve performance.	RAID Migration Logical Device Expansion LUN Concatenation Wide Striping
Security measures (data encryption) Functions that encrypt data in the drive media to prevent the data from being fraudulently decoded.	Encryption with Self Encrypting Drive (SED) Firmware Data Encryption
Security measures (user access management) Functions to prevent information leakage that is caused by a malicious access.	Account Management User Authentication Audit Log
Security measures (unauthorized access prevention) Functions that prevent unintentional storage access.	Host Affinity iSCSI Security
Environmental burden reduction Functions that adjust the operating time and the environment of the installation location in order to reduce power consumption.	Eco-mode Power Consumption Visualization
Operation management (device monitoring) Functions that reduce load on the system administrator, and that improve system stability and increase operating ratio of the system.	Operation Management Interface Performance Information Management Event Notification Device Time Synchronization
Power control Functions that are used to link power-on and power-off operations with servers and perform scheduled operations.	Remote Power Operation (Wake On LAN)
High-speed backup Continuous business Data can be duplicated at any point without affecting other operations.	Backup
Performance tuning Functions that can perform tuning in order to improve performance.	Assigned CMs Striping Size Expansion
Environmental friendliness The ETERNUS DX complies with RoHS, as mandated by the European Parliament and Council. RoHS limits the use of specific chemicals in electrical and electronic equipment.

Table: Expansion Functions
Overview	Function
Overview	Function	*Operations optimization (Deduplication/Compression) (1)** A function that eliminates duplicated data and compresses the data to reduce the amount of written data.	Deduplication/Compression
Security measures (user access management) A function that prevents unnecessary access to other tenants.	Multitenancy
Stable operation For stable operation of server connections, the appropriate response action and the processing priority can be specified for each server. If an error occurs in the ETERNUS DX during operations, the connected storage system is switched automatically and operations can continue.	Quality of Service (QoS) Host Response Storage Cluster
Data relocation A function that migrates data between ETERNUS storage systems.	Storage Migration
Non-disruptive data relocation A function that migrates data between ETERNUS storage systems without stopping the business server.	Non-disruptive Storage Migration
Information linkage (function linkage with servers) Functions that cooperate with a server to improve performance in a virtualized environment. Beneficial effects such as centralized management of the entire system and a reduction of the load on servers can be realized.	VMware Linkage Veeam Storage Integration Microsoft Linkage OpenStack Linkage Logical Volume Manager (LVM)

The ETERNUS DX900 S6 and the ETERNUS DX8900 S6 support the Compression function only.