EVGA Z490 DARK (131-CL-E499)
- 60 -
RAID1
: This type of array is referred to as “Mirroring” or a “Mirrored Array.”
RAID1 uses two (2) physical drives and writes ALL data to both drives simultaneously
providing a 1 to 1 mirror, giving you 100% redundancy live. So as data is being written,
if a drive fails you are still up and running. In most cases, when a failure occurs you will
experience a stutter in performance and a small but noticeable slow down. Next, you’ll
likely see a popup warning from IRST alerting you that a drive has failed or is
disconnected, and your array’s status has been changed to “Degraded”.
RAID1 (at least on these PCH driven controllers) are limited to 2 drives. Also being
that this is a mirror, you will use 50% of your capacity in redundancy.
The Good-
RAID1 allows you to suffer a catastrophic failure of 1 drive with no ill effects to
the data being stored.
Because data is stored on 2 drives at once, read speeds typically increase a little,
but not to the speed of RAID5 and, certainly, not to the speed of RAID 0.
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-D
DATA-A
DATA-B
DATA-C
DATA-D
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-D
DATA-A
DATA-B
DATA-C
DATA-D
P-DRIVE1
P-DRIVE2
P-DRIVE3
P-DRIVE4
DATA-A
DATA-B
DATA-C
DATA-D
DATA-ABCD
DATA-ABCD
DATA-ABCD
DATA-ABCD
L-DRIVE =
≃
4TB
DATA-ABCD
RAID 0 (4 Drive)
