Hot spare disk use dedicated to a specific RAID group - Dedicated Hot Spare

ETERNUS AF/ETERNUS DX support two hot spare types: "Global Hot Spare" and "Dedicated Hot Spare".
Unlike "Global Hot Spare" which can be used with any RAID groups, Dedicated Hot Spare can only be used with a specific RAID group. When a disk drive fails in the RAID group with a Dedicated Hot Spare is pre-set, data on the disk drive is rebuild automatically on the dedicated hot spare disk. Then after the failed disk drive is replaced with a new disk drive, data on the dedicated hot spare disk will be retrieved (copied back) onto the new disk automatically. Dedicated Hot Spare is a special case of Global Hot Spare for use in Dedicated Mission Critical environments where sharing is insufficient security.

• Product Requirements

  Supported Storages	All-Flash Arrays	ETERNUS AF150 S3 ETERNUS AF250 S3/S2, AF250 ETERNUS AF650 S3/S2, AF650 ETERNUS DX200F
  	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 DX900 S5 ETERNUS DX8700 S3/S2, DX8900 S4/S3 ETERNUS DX60 S2, DX80 S2, DX90 S2 ETERNUS DX400 S2 series

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