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NOTEMigrating a RAID volume could take several hours to completeWith RAID level migration function, it has two different type “On line” and “Off line”alone with limitation as listed below.1. During RAID level migration, it is not allowed reboot or shutdown system.2. Off line RAID level migration, all services will stop and data is inaccessible.3. To have ZFS file system created doing on line RAID level migration from R1to R5 or R1 to R6, the all services will restart and volumes “user data”,“iSCSI” and “Target USB” are read only during operation.4. To have ext3 and XFS file system created doing on line RAID levelmigration from R1 to R5 or R1 to R6, the all services will restart andvolumes “iSCSI” and “Target USB” are read only but “user data” is capableread / write during operation.5. The other combination to make as “On line” can have read / write work asnormal.Below is a table listing of possible RAID migration schemes:ToFrom RAID 0 RAID 5 RAID 6RAID0[OFFLINE][RAID 0] HDDx2 to [RAID 0] HDDx3[RAID 0] HDDx2 to [RAID 0] HDDx4[RAID 0] HDDx2 to [RAID 0] HDDx5[RAID 0] HDDx3 to [RAID 0] HDDx4[RAID 0] HDDx3 to [RAID 0] HDDx5[RAID 0] HDDx4 to [RAID 0] HDDx5[OFFLINE][RAID 0] HDDx2 to [RAID 5] HDDx3[RAID 0] HDDx2 to [RAID 5] HDDx4[RAID 0] HDDx2 to [RAID 5] HDDx5[RAID 0] HDDx3 to [RAID 5] HDDx4[RAID 0] HDDx3 to [RAID 5] HDDx5[RAID 0] HDDx4 to [RAID 5] HDDx5X58
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