Non-stop LUN migration to different RAID groups - RAID Migration

RAID Migration is a function that moves a volume to a different RAID group with the data integrity being guaranteed. This allows easy redistribution of volumes among RAID groups in response to customer needs. RAID Migration can be carried out while the system is running, and may also be used to switch data to a different RAID level changing from RAID5 to RAID1+0, for example.
The volume number (LUN) does not change before and after the migration. The host can access the volume before, during, or after a migration without being affected by the volume number.
The following changes can be performed by RAID Migration.

Volumes moved from a 960GB drive configuration to a 3.84TB drive configuration

RAID migration1

Volumes moved to a different RAID level (RAID5 ⇒ RAID1+0)

Logical device expansion2

"LUN Expansion function" that allows for logical volume (LUN) expansion during migration is also provided.


  • Provides non-stop logical volume migration to different RAID groups comprised of larger capacity disk drives
  • Enables non-stop migration of RAID groups to match specific needs for higher reliability and performance

Product Requirements

Supported StoragesAll-Flash ArraysETERNUS AF150 S3
ETERNUS AF250 S3/S2, AF250
ETERNUS AF650 S3/S2, AF650
Hybrid Storage SystemsETERNUS 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
Supported ServersMission Critical IA/UNIX/Industry Standard Server

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Further Information

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