DataDirect Networks EF2800, User Manual

Page: 91 / 381

68
DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
C r e a t i n g a n d M a n a g i n g A r r a y s & P a r t i t i o n s
N
OTE
: Before you create more than one array, you must be sure that
your host operating system supports multiple logical unit numbers (LUNs).
Most operating systems do support multiple LUNs or have an option you
can enable to support multiple LUNs. If your operating system does not
support multiple LUNs, the host will only be able to see one array at LUN 0.
You can create an array that has just one partition or multiple
partitions. Single-partition arrays work well in environments that need
one large, fault-tolerant storage space for data on one server. A large
database accessed by users on a single server that is used only for that
application is an example. Multiple-partition arrays work well when
you have very large disk drives and you want to make the most efficient
use of disk space for fault tolerance (parity and spares).
You can add partitions to any free space in an array. For more
information, see Section
5.3.2 on page 80.
To create an array:
1. From SAM, select
Manage EF2800
>
Disk Array Config
>
Create an
Array
. The Create an Array page displays (top panel shown)
(Figure 46)
.
Figure 45. Array drive requirements by RAID level
RAID level
Minimum number of
drives per array
Maximum number of
drives per array
Volume 1 1
RAID 0 2 16
RAID 1 (Mirrored) 2 16
RAID 3 3 16
RAID 4 3 16
RAID 5 3 16
RAID 10 4 16
RAID 50 6 32