LaCie 2BIG NAS User Manual page 222

Replace a failed or missing disk
If you have configured your RAID as Standard (Manual as opposed to SimplyRAID), the new disk must have
equal or greater capacity than the disk it is replacing.
1. Remove the failed disk and insert a new hard drive per the instructions above.
2. Go to Dashboard > RAID. The recently inserted hard disk will be labelled New.
3. If the LaCie 5big NAS Pro RAID configuration is SimplyRAID, RAID 1, RAID 5, or RAID 6:
1. Click the Replace button below the New Disk. DO NOT click on Reset.
2. Confirm the addition and complete the RAID Setup Wizard.
LaCie 2big NAS | LaCie 5big NAS Pro User Manual 222