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Enhanced data reliability - Disk drive patrol

Data of ETERNUS AF/ETERNUS DX are protected via a disk drive patrol function. An internal controller regularly checks the disk drives, in background, to detect errors and write failures. This process also ensures that data consistency within the volume group[1] is also maintained.

The data on each disk drive is read, and if an error is detected, data is reconstructed using redundant information contained within the volume group. The corrected data is then written to a new valid area on the disk drive.

  • [1]Volume group is a group configured in a RAID.

Disk drive patrol

Benefit

  • Higher data reliability as data errors are quickly found and corrected (by reconstruction) and disk write failures are avoided.

Product Requirements

Supported Storages All-Flash Arrays ETERNUS AF250 S2/AF250
ETERNUS AF650 S2/AF650
ETERNUS DX200F
Hybrid Storage Systems/
Disk Storage Systems
ETERNUS DX60 S4/S3
ETERNUS DX100 S4/S3, DX200 S4/S3
ETERNUS DX500 S4/S3, DX600 S4/S3
ETERNUS DX8700 S3/S2, DX8900 S4/S3
ETERNUS DX60 S2/DX60
ETERNUS DX80 S2/DX80
ETERNUS DX90 S2/DX90
ETERNUS DX400 S2/DX400 series
ETERNUS DX8000 series
ETERNUS4000, ETERNUS8000

*Note: Products/features/support content introduced on this page may be modified without notice.

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