Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 151)

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WEB BROWSER-BASED CONFIGURATION
Note:
1. Once the “Expand Raid Set” process has started, user can
not stop it. The process must be completed.
2. If a disk drive fails during RAID set expansion and a hot
spare is available, an auto rebuild operation will occur
after the RAID set expansion completes.
3. RAID 30/50/60 does not support the "Expand Raid set".
4. RAID set expansion is a quite critical process, we strongly
recommend customer backup data before expand. Unex-
pected accident may cause serious data corruption.
Select the “Expand Raid Set” option. If there is an available disk,
then the “Select SAS/SATA Drives For Raid Set Expansion” screen
appears.
Select the target RAID set by clicking on the appropriate check
box. Select the target disk by clicking on the appropriate check
box. Click on the "Submit" button to start the expansion on the
RAID set. The new additional capacity can be utilized by one or
more volume sets. The volume sets associated with this RAID set
appear for you to have chance to modify RAID level or stripe size.
Follow the instruction presented in the “Modify Volume Set ” to
modify the volume sets; operation system specific utilities may be
required to expand operating system partitions.
6.5.4 Offline Raid Set
This function is for customer being able to unmount and remount
a multi-disk volume. All Hdds of the selected RAID set will be put
into offline state, spun down and fault LED in fast blinking mode.
User can remove those Hdds and insert new Hdds on those empty
slots without needing power down the controller to perform the
online array roaming.