NST-225MX-S3 2.5” Dual SATA 6 Gb/s to USB 3.0 HDD/SSD RAID
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RAID 1 (Mirror):
It allows the device to automatically copy data to both HDDs. It stores
all data in duplication to both drives to protect against data loss out of drive failure.
If one drive fails, the Mirrored volume is still usable, but it is in a vulnerable state since
the other mirrored hard drive is inaccessible. When the offline drive resumes online, the
appliance begins the rebuild process immediately to restore data redundancy.
Host access takes precedence in rebuild process. If you continue using the Mirror volume
during the rebuild, the rebuild process will take a longer time to complete, and the host
data transfer performance will also be impacted.
JBOD (BIG or LARGE):
It concatenates a series of physical HDDs as a single large
volume; HDD 1 and 2 are combined into a storage capacity that is equal to the sum of
both HDDs.
