LaCie ICA-312 User Manual page 184

Rebuilding Times
Rebuilding a protected RAID array can take many hours, depending on the capacity of the hard disks and your
LaCie NAS's available resources (concurrent tasks such as backups or torrent downloads will slow rebuilding).
Changing to an unprotected RAID mode (e.g. RAID 0) takes less than five minutes. Note that data is accessible
during rebuilding.
RAID STATUS: EXPAND, REPLACE, AND RESET
The RAID Status box will inform you of changes to your array that may require action on your part. Follow the
instructions below to:
Remove and/or insert a disk
Perform one of the following:
Expand your RAID with a new disk
Replace a missing or failed disk
Reset the RAID configuration with the available disks
Important info: If a hard disk that you have purchased from LaCie fails, please contact your LaCie reseller
or LaCie Customer Support.
Hard Disk Replacement/Expansion with Unprotected and Protected Arrays
Unprotected RAID Arrays and Swapping/Expanding Hard Disks:
Removing a hard disk from a RAID 0 array while the device is powered on may cause you to lose data. To
avoid problems, shut down the LaCie NAS before removing healthy disks. Return the hard drives to their
proper bays before powering on the LaCie NAS.
In cases where a hard drive has failed or you wish to expand storage capacity, data will be lost when
replacing/swapping hard disks.
Protected RAID Arrays and Swapping/Expanding Hard Disks: If your array is protected (e.g. RAID 1), you
can remove a hard disk while the product is turned on without damaging the array and losing data, a process
also referred to as "hot-swapping". In most instances, LaCie recommends hot-swapping when replacing or
expanding hard disks in the LaCie NAS. For example, if you swap or insert unclean hard drives (with data) from
another LaCie NAS (e.g. a LaCie 2big NAS to a LaCie 5big NAS Pro), you may experience problems when first
booting your current LaCie NAS.
When replacing or expanding hard drives in a protected RAID array:
Perform the operation while the LaCie NAS is powered on (hot-swapping).
Use clean hard drives (without data).
Remove/Insert a Hard Disk
Disk Removal
LaCie 2big NAS (OS 3.0) | LaCie 5big NAS Pro User Manual 184