LaCie 2BIG NAS User Manual page 314

HARD DISK EXPANSION AND REPLACEMENT:
PROTECTED VOLUMES
Review the instructions below before adding or replacing hard drives.
REMOVING HEALTHY DISKS FROM A PROTECTED VOLUME
A protected volume can be:
SimplyRAID (single or double security)
RAID 1/RAID 1+Spare (two disks minimum)
RAID 5/RAID 5+Spare
RAID 6/RAID 6+Spare
Removing a healthy hard disk from a protected volume while the LaCie 5big NAS Pro is powered on
will render the volume unprotected. If the volume has double-disk security, removing two healthy
hard disks while the LaCie 5big NAS Pro is powered on will render the volume unprotected. While
removing healthy disks is not recommended, you can avoid breaking the RAID by shutting down the LaCie NAS
first. Return the hard drives to their proper bays before powering on the LaCie NAS.
If a healthy disk has been removed while the LaCie 5big NAS Pro is powered on, you can reinsert it into the
enclosure slot and NAS OS will synchronize the RAID. It is important to note that during synchronization:
NAS performance is reduced due to a heavier demand upon the CPU
RAID protection is not available until the synchronization is complete
Older hard drives can fail, especially models that are not constructed for NAS
Important info on NAS backup: It is recommended that all users back up data to DAS or another NAS as
further protection against disk failure or secondary points of failure (e.g. hardware, network, etc.). See
Backup Jobs for details.
LaCie 2big NAS | LaCie 5big NAS Pro User Manual 314