Areca ARC-1880 Series User Manual page 8

A. Device Event .............................................................. 176
B. Volume Event ............................................................. 177
C. RAID Set Event .......................................................... 178
D. Hardware Monitor Event .............................................. 178
Appendix E .................................................................. 180
RAID Concept .................................................................... 180
RAID Set ......................................................................... 180
Volume Set ...................................................................... 180
Ease of Use Features ......................................................... 181
• Foreground Availability/Background Initialization .............. 181
• Online Array Roaming ................................................... 181
• Online Capacity Expansion ............................................. 181
• Online Volume Expansion .............................................. 184
High availability .................................................................. 184
• Global/Local Hot Spares .................................................. 184
• Hot-Swap Disk Drive Support ........................................... 185
• Auto Declare Hot-Spare ................................................. 185
• Auto Rebuilding ............................................................ 186
• Adjustable Rebuild Priority ............................................... 186
High Reliability ................................................................... 187
• Hard Drive Failure Prediction ............................................ 187
• Auto Reassign Sector ...................................................... 187
• Consistency Check ......................................................... 188
Data Protection .................................................................. 188
• Battery Backup ............................................................. 188
• Recovery ROM ............................................................... 189
Appendix F .................................................................. 190
Understanding RAID .......................................................... 190
RAID 0 ............................................................................ 190
RAID 1 ............................................................................ 191
RAID 10(1E) .................................................................... 192
RAID 3 ............................................................................ 192
RAID 5 ............................................................................ 193
RAID 6 ............................................................................ 194
RAID x0 .......................................................................... 194
Single Disk (Pass-Through Disk) ......................................... 195