User manual

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Expand C apacity (Online RAID C apacity Expansion)
Sce na r io
You bought four 250GB HDD for initial setup of TS-509 Pro and configured RAID 5 disk configuration
with the four HDD.
A half year later, the data size of the department has largely increased to 1.5TB. In other words,
the storage capacity of the NAS is running out of use. At the same time, the price of 1TB hard drives
has dropped to a large extent.