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  8. Non-stop RAID group capacity expansion - Logical Device Expansion

Non-stop RAID group capacity expansion - Logical Device Expansion

The Logical Device Expansion function provides increased capacity for a RAID group by real-time addition of disk drives while operations continue uninterrupted. This allows for the deployment and expansion of logical volumes (LUN) in 'non-stop' environments.

Expansion of a RAID5 (3+1) group to RAID5 (5+1) using spare disk drives and definition of a new LUN2 to cover the additional space.

Logical device expansion1

Addition of new disk drives to convert RAID5 (4+1) to RAID 1+0 (4+4)

Logical device expansion2

Benefits

  • Enables RAID group capacity increases by adding disk drives while retaining data
  • Enables reorganization of RAID groups to different levels and different capacities at the same time

Product Requirements

Supported Storage Systems Disk Storage Systems ETERNUS DX60 S3
ETERNUS DX100 S3/DX200 S3
ETERNUS DX500 S3/DX600 S3
ETERNUS DX8700 S3/DX8900 S3
ETERNUS DX60/DX60 S2
ETERNUS DX80/DX80 S2
ETERNUS DX90/DX90 S2
ETERNUS DX400/DX400 S2 series
ETERNUS DX8000 series/DX8700 S2
ETERNUS4000/ETERNUS8000
All Flash Arrays ETERNUS DX200F
Supported Servers Mission Critical IA/UNIX/Industry Standard Server

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