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Component redundancy and hot swap, hot expansion

In order to ensure reliable operation and high availability, the ETERNUS disk storage systems have a fully redundant configuration and hot maintenance capability. The interconnection of the CMs is duplicated.
A drive enclosure (DE) has also two independent interface ports that are directly connected to two CMs for path redundancy.

The use of redundant components and multiple controller-to-drive connections ensures exceptional reliability. Hardware components supporting hot swap and hot expansion features not only enable firmware upgrades during system operation, but also provide capacity expansion together with the LUN expansion feature where DEs or HDDs are added as needed.

Component redundancy and hot swap

Component redundancy and hot expansion

Components for hot swap

ETERNUS DX60 S3
  • CM (Controller Module)
  • IOM (I/O Module)
  • CPSU (CE Power Supply Unit)
  • DPSU (DE Power Supply Unit)
  • HDD
  • Operation panel
*Note :
  • Memory can be exchanged after CM removed.
  • CPSU/DPSU have fans.
ETERNUS DX100 S3
ETERNUS DX200 S3 (Dual controller model)
ETERNUS DX200F
  • CM (Controller Module)
  • IOM (I/O Module)
  • CPSU (CE Power Supply Unit)
  • DPSU (DE Power Supply Unit)
  • HDD/SSD
  • FEM (Fan Expander Module)
  • Operation panel
*Note :
  • CA and Memory can be exchanged after CM removed.
  • CPSU/DPSU have fans.
ETERNUS DX500 S3
ETERNUS DX600 S3
  • CM (Controller Module)
  • IOM (I/O Module)
  • CA (Channel Adaptor)
  • CPSU (CE Power Supply Unit)
  • DPSU (DE Power Supply Unit)
  • HDD/SDD
  • PFM (PCIe Flash Module)
  • FEM(Fan Expander Module)
  • BBU(Bootup and Utility Device)
  • BUD (Bootup and Utility Device)
  • Operation panel
*Note :
  • CM-FAN and Memory can be exchanged after CM removed.
  • CPSU/DPSU have fans.
ETERNUS DX8700 S3
ETERNUS DX8900 S3
  • CM (Controller Module)
  • IOM (I/O Module)
  • CA (Channel Adaptor)
  • CPSU (CE Power Supply Unit)
  • DPSU (DE Power Supply Unit)
  • HDD/SDD
  • PFM (PCIe Flash Module)
  • BBU (Battery Backup Unit)
  • BUD (Bootup and Utility Device)
  • FRT (Frontend Router)
  • SVC (Service Controller)
  • FPSU (FE Power Supply Unit)
  • FANU (Fan Unit)
  • FE MP (FE Mid Plane)
  • FE MP BRG (FE Mid Plane Bridge)
  • System operation panel
  • Operation panel
*Note :
  • CM-FAN and Memory can be exchanged after CM removed.
  • CPSU/DPSU have fans.

Benefits

  • During a failure, components can be exchanged without system down-time
  • Hot expansion provides capacity expansion during system operation
  • Hot swap enables firmware upgrades during system operation

Product Requirements

Supported Storage Disk Storage Systems ETERNUS DX60 S3
ETERNUS DX100 S3, DX200 S3
ETERNUS DX500 S3, DX600 S3
ETERNUS DX8700 S3/DX8900 S3
All Flash Arrays ETERNUS DX200F
*Note :
  • ETERNUS DX100S3 and DX200 S3 feature this function when they have dual controllers.
  • Products/features/support content introduced on this page may be modified without notice.