Internal Disk Drives; Raid Configuration - NEC Express5800 A2040b Configuration Manual

CONFIGURATION GUIDE

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 512MB cache.
With 1 RAID Controller configuration, max. 8 internal drives can be connected per one RAID Controller.
With 2 RAID Controller configuration, max. 4 internal drives can be connected per one RAID Controller.
Controller
NE3303-168
or
NE3303-173
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 in 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.
NEC Corporation
–
NEC Express5800/A2040b, A2020b, A2010b, A1040b
RAID
RAID 0 (striping)
RAID 1 (mirroring)
RAID 5 (parity)
RAID 6 (double parity)
RAID 10 (RAID1 + RAID0)
RAID 50 (RAID5 + RAID0)
RAID 60 (RAID6 + RAID0)
Revision 7.0 – December 2014
No. of Disk
1 ~ 8 Drive Capacity x No. of Drive
2 Drive Capacity x No. of Drive / 2
3 ~ 8 Drive Capacity x (No. of Drive-1)
3 ~ 8 Drive Capacity x (No. of Drive-2)
4/6/8 Drive Capacity x No. of Drive / 2
6 / 8 Drive Capacity x (No. of Drive-2)
6 / 8 Drive Capacity x (No. of Drive-4)
Capacity Hot Spare
N
Y
Y
Y
Y
Y
Y
30