Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 163)

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WEB BROWSER-BASED CONFIGURATION
6.6.4.1 Volume Growth
Use “Expand RAID Set" function to add disk to a RAID set. The
additional capacity can be used to enlarge the last volume set
size or to create another volume set. The “Modify Volume Set”
function can support the “Volume Modification” function. To
expand the last volume set capacity, move the cursor bar to
the “ Capacity” item and entry the capacity size. When finished
the above action, click on the "Submit" button to complete the
action. The last volume set starts to expand its capacity. If you
have free spaces from reserved or delete volumes, you can
enlarge the last volume set size before the free spaces.
To expand an existing volume noticed:
• Only the last volume can expand capacity.
• When expand volume capacity, you can’t modify stripe size or
modify RAID level simultaneously.
• You can expand volume capacity, but can’t reduce volume
capacity size.
• After volume expansion, the volume capacity can't be
decreased.
For greater 2TB expansion:
• If your system installed in the volume, don't expand the
volume capacity greater 2TB, currently OS can’t support boot
up from a greater 2TB capacity device.
• Expand over 2TB used LBA64 mode. Please make sure your
OS supports LBA64 before expand it.