ETERNUS Disk Storage System – Features

ETERNUS Disk storage systems individually and in cooperation with software offer the following features.
Supported products are shown on each feature page.


High-speed replication

Advanced Copy functions Online high-speed backup
Advanced Copy EC Function to maintain a synchronized copy of operation volumes
Advanced Copy OPC Function to create a operation volume copy at any specific time
Advanced Copy QuickOPC Function to create an initial operation volume copy and then only copy subsequent updated data
Advanced Copy SnapOPC, SnapOPC+ Function to create a operational copy of data items before they are updated.
Fast Recovery This function recovers data quickly by relocating the data in a failed drive to other drives quickly when a drive error occurs.
Online high-speed backup/recovery for GlobalServer environments Backup for GlobalServer environment using the Advanced Copy function
Cooperative database data protection Backup using DB and the Advanced Copy function
Smart backup operation with VSS Backup using VSS and the Advanced Copy function
Nearline disk drives The ideal media for archiving and Disk to Disk backup

Disaster recovery

Remote Copy using Fibre Channel Interface (Remote Advanced Copy function (REC)) Disaster Recovery by Remote Location Backup
Remote Copy using iSCSI Interface (Remote Advanced Copy function (REC)) Disaster Recovery by Remote Location Backup
Remote Copy Disk Buffered REC over Low bandwidth Networks Remote Copy Disk Buffered REC over Low bandwidth Networks

Non-stop operation

Component redundancy and hot swap ETERNUS disk storage systems have full redundant configuration and hot-maintenance capability.
Reverse Cabling Increasing storage system availability
Storage Cluster The Storage Cluster function enables operations to continue even if one storage system fails by switching to other storage systems.
Advanced RAID for assured data access even during a disk failure In ETERNUS disk storage systems, each member disk drive of a RAID group is located in a different Drive Enclosure.
ETERNUS Multipath Driver Path failover
PRIMECLUSTER Inter-unit mirroring for even higher storage availability
PRIMECLUSTER Cluster system support
Cyclic CM Non-stop operation with multiple controllers
I/O RAS Failure effect minimization by component isolation in GlobalServer environments
DVCF and File Duplication Controller GlobalServer volume duplication between disk storage systems
VRMGR GlobalServer volume copy during operation
Hot Standby Prevention of operational halts caused by hardware problems on a GlobalServer

Data Integrity

Data Block Guard Data block check codes for improved data integrity
DB (Data Base) Data Guard Improved data reliability combined with Oracle DB
Disk drive patrol Disk drives and data integrity checking
Cache Protector Cache data protection during power failures

Redundant Copy Preventive exchange while maintaining redundancy
Global Hot Spare Efficient management of hot spare disk drives between different RAID groups
Dedicated Hot Spare Hot spare disk use dedicated to a specific RAID group


Host Affinity Disk access settings for each host interface adopter
Data Encryption Data Encryption in the disk storage systems
Robust security using SSL / SSH Encrypted transmission of information over a network


Solid State Drives (SSD) Low-power, highly reliable and high performance drives
RAID Technologies that improve performance and avoid data loss caused by disk failure: RAID0, 1, 1+0, 5, 5+0, 6
Quality of Service (QoS) Maintaining service levels of high-priority tasks
Quality of Service Automation Automated resource management according to business priorities
Extreme Cache Extreme Cache (SSD cache built in a controller) significantly increases the read cache capacity.
I/O offloading Improve the maximum random access performance
Bind-in-Cache Accelerated I/O access for GlobalServer environment
Work Volume Load Sharing Efficient disk utilization for GlobalServer environment
High Speed Search function Reduced overheads between GlobalServer CPU and disk storage systems
The Quest for Ultimate Performance – SPC Benchmark SPC Benchmark test results