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

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

In ETERNUS disk storage systems, 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

Benefit

  • Ensures continuous data access

The RAID level where DEs are deployable with reliability guaranteed.

Supported Disk Storage Systems RAID level
ETERNUS DX500 S3 RAID1, 1+0, 5, 5+0, 6
ETERNUS DX600 S3 RAID1, 1+0, 5, 5+0, 6
ETERNUS DX8700 S3/DX8900 S3 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 DX8700 S2 RAID1, 1+0, 5, 5+0, 6
ETERNUS DX8000 series RAID1, 1+0, 5, 6
ETERNUS4000 RAID1, 1+0, 5, 6
ETERNUS8000 RAID1, 1+0, 5, 6

Product Requirements

Supported Disk Storage Systems ETERNUS DX500 S3/DX600 S3
ETERNUS DX8700 S3/DX8900 S3
ETERNUS DX400/DX400 S2 series
ETERNUS DX8000 series/DX8700 S2
ETERNUS4000, ETERNUS8000
Supported Servers GlobalServer and Mission Critical IA/UNIX/Industry Standard Server (*Note)

*Note: Only RAID1 is supported with GlobalServer.