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Archived content

NOTE: this is an archived page and the content is likely to be out of date.

Advanced RAID organisation 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.

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.

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