Chapter 2 – Before you begin
13
C
C
h
h
a
a
p
p
t
t
e
e
r
r
2
2
B
B
e
e
f
f
o
o
r
r
e
e
y
y
o
o
u
u
b
b
e
e
g
g
i
i
n
n
This chapter contains includes all the information about RAID
level and preparing for installation. You will find:
A full introduction and comparison of RAID level 1
Important notices on the safe operation and installation of
ACS-76500/76510
Pre-installation planning
Introduction to RAID level
The ACS-76500/76510 can support the following RAID level 1+backup.
RAID Level 1 supports three disk channels with the “backup” function. It is the function of
sequence to turn on and off one disk to be the backup disk in order to keep the data for rebuild
when two disks data crash at the same time. It automatically turns off one disk and always
keeps two disks for RAID 1 operation. The Off-line disk will be turned on and one of on-line
disk will be turned off to do the daily backup function. The time scheduling backup function is
through ACSView GUI management software to do it.
Further information on RAID concepts can be found in Appendix B, Glossary.
