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Advanced RAID organization for ensuring data access even during a drive enclosure failure

In ETERNUS AF/ETERNUS DX, each member disk drive of a RAID group is located in a different Drive Enclosure. This keeps the RAID group accessible even when one whole Drive Enclosure becomes unusable.

In addition, with support of RAID6 (double parity), two disk drive failures occurring in the same RAID group can be recovered. This ensures exceptional reliability.

The figure shown below is the image with ETERNUS8000. The configuration will differ depending on the product.

Advanced RAID


  • Ensures continuous data access

The RAID level where DEs are deployable with reliability guaranteed.

Supported Storages RAID level
ETERNUS AF650 S2/AF650 All-Flash Arrays RAID1, 1+0, 5, 5+0, 6
ETERNUS DX500 S4/S3 RAID1, 1+0, 5, 5+0, 6
ETERNUS DX600 S4/S3 RAID1, 1+0, 5, 5+0, 6
RAID1, 1+0, 5, 5+0, 6
ETERNUS DX400 S2 series RAID1, 1+0, 5, 5+0, 6
ETERNUS DX400 series RAID1, 1+0, 5, 6
ETERNUS DX8000 series RAID1, 1+0, 5, 6
ETERNUS4000 RAID1, 1+0, 5, 6
ETERNUS8000 RAID1, 1+0, 5, 6

Product Requirements

Supported Storages All-Flash Arrays ETERNUS AF650 S2/AF650
Hybrid Storage System/
Disk Storage Systems
ETERNUS DX500 S4/S3, DX600 S4/S3
ETERNUS DX8700 S3/S2, DX8900 S4/S3
ETERNUS DX400 S2/DX400 series
ETERNUS DX8000 series
Supported Servers GlobalServer and Mission Critical IA/UNIX/Industry Standard Server (*Note)

*Note: Only RAID1 is supported with GlobalServer.