RAID 6 deploys two parity records to different disk drives (double parity) enabling two simultaneous disk drive failures in the same RAID group to be recovered.
RAID 6 where parity updates are allocated separately across multiple disks, as well as RAID 5, are able to implement multiple write orders at the same time. This feature ensures higher performance when compared to RAID 4 technology.

And some ETERNUS AF and ETERNUS DX are able to deploy drives where RAID 6 and 5 arrays are deployed across separate drive enclosures (DE) for improved reliability. (Learn more)

Furthermore, ETERNUS AF and ETERNUS DX (S3 or later) features high-speed rebuild function using double parity named "Fast recovery". This function shortens the rebuild time and avoids the risk of interruption of business operations. (Learn more)

Video demonstration

Write process

Read process

Process on disk failure

RAID 0 supported:

All-Flash Arrays ETERNUS AF150 S3
ETERNUS AF250 S3/S2, AF250
ETERNUS AF650 S3/S2, AF650
Hybrid Storage Systems ETERNUS DX60 S5/S4/S3
ETERNUS DX100 S5/S4/S3, DX200 S5/S4/S3
ETERNUS DX500 S5/S4/S3, DX600 S5/S4/S3
ETERNUS DX8700 S3/S2, DX8900 S4/S3
ETERNUS DX60 S2, DX80 S2, DX90 S2
ETERNUS DX400 S2 series

Further Information

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