CONFIGURATION GUIDE
–
NEC Express5800/A2040d, A2020d, A2010d, A1040d
NEC Corporation
Rev.2.0
– Oct. 2017
29
4 Internal Disk Drives
4.1 RAID Configuration
RAID0/1/5/6/10/50/60 is supported.
2 kinds of RAID Controller are supported; with 1GB or 2GB cache.
With 1 RAID Controller configuration, max. 8 internal drives can be connected.
With 2 RAID Controller configuration, max. 4 internal drives can be connected per one RAID Controller.
Controller
RAID
No. of Disk
Capacity
Hot Spare
NE3303-178
or
NE3303-177
RAID 0 (striping)
1 ~ 8
Drive Capacity x No. of Drive
N
RAID 1 (mirroring)
2
Drive Capacity x No. of Drive / 2
Y
RAID 5 (parity)
3 ~ 8
Drive Capacity x (No. of Drive-1)
Y
RAID 6 (double parity)
3 ~ 8
Drive Capacity x (No. of Drive-2)
Y
RAID 10 (RAID1 + RAID0)
4/6/8
Drive Capacity x No. of Drive / 2
Y
RAID 50 (RAID5 + RAID0)
6 / 8
Drive Capacity x (No. of Drive-2)
Y
RAID 60 (RAID6 + RAID0)
6 / 8
Drive Capacity x (No. of Drive-4)
Y
NOTE:
Needs to order RAID Controller to configure internal drives
For RAID Configuration, same type of internal drives need to be ordered within one RAID group (pack)
Multiple RAID group can be configured by one RAID Controller. In case of RAID1, 4 groups at maximum.
Different capacity/rotation speed/disk type of internal drives can be mixed among different RAID groups.
When configuring hot-spare disks, need to use same type of internal disk for the RAID group.
All internal drives are same type, Global Hot Spare can be available.
When mixing different capacity/rotation speed/disk type drives, need to use Dedicated Hot Spare
per RAID group.
With 2 RAID Controller configuration, max. 4 internal drives can be connected per one RAID controller.
Therefore, RAID50/60 is not available with 2 RAID Controller configuration,
With 2 RAID Controller configurations, RAID cannot be configured among internal drives under different
RAID Controllers.
Please refer to
“Internal Drive” of “Reference” section for the details about Internal Drive: Priority/Order of
Installatioin.