Vantec NexStar MX User Manual download pdf (Page 15)

NOTE:

All data previously stored on the hard drive will

be lost! Please back up all data to a separate

storage before continuing.

RAID 1 Mode (Mirror):

This mode allows the device automatically to

copy data to both hard drives. It stores all data in

duplicate on separate drives to protect against

data loss due to drive failure. It provides the

highest level of data protection for critical data

that you cannot aﬀord to lose if a hard drive fails.

The capacity is equal to the smaller of the two

hard drives. Switching to this mode will prompt

to initialize and format the hard disks. This will

not work to create a mirror set from existing hard

drives.

If one drive fails, the SAFE volume is still usable, but it is in a vulnerable state because its mirrored hard

drive is inaccessible. When the oﬄine drive comes back online, the appliance begins a rebuild process

immediately to restore data redundancy. Although the volume remains available during the rebuild

process, the volume is susceptible to data loss through damage to the remaining drive until redundancy

is restored at the end of the rebuild and veriﬁcation process. Host access takes precedence over the

rebuild process. If you continue to use the SAFE volume during the rebuild, the rebuild process will take

a longer time to complete, and the host data transfer performance will also be aﬀected.

( ﬁgure 6-E)

RAID 1 Mode

Mode Conﬁguration

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Vantec NexStar MX User Manual Page 15