Areca ARC-1222 - Disk Capacity Truncation Mode; Ethernet Configuration

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WEB BROWSER-BASED CONFIGURATION
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Disk Capacity Truncation Mode
Areca RAID controllers use drive truncation so that drives
from differing vendors are more likely to be able to be used as
spares for each other. Drive truncation slightly decreases the
usable capacity of a drive that is used in redundant units.
The controller provides three truncation modes in the system
conguration: Multiples Of 10G, Multiples Of 1G, and Dis-
abled.
Multiples Of 10G: If you have 120 GB drives from differ-
ent vendors; chances are that the capacity varies slightly. For
example, one drive might be 123.5 GB, and the other 120 GB.
Multiples Of 10G truncates the number under tens. This makes
same capacity for both of these drives so that one could replace
the other.
Multiples Of 1G: If you have 123 GB drives from different ven-
dors; chances are that the capacity varies slightly. For example,
one drive might be 123.5 GB, and the other 123.4 GB. Multiples
Of 1G truncates the fractional part. This makes capacity for
both of these drives so that one could replace the other.
No Truncation: It does not truncate the capacity.
6.8.2 Ethernet Conguration
Use this feature to set the controller Ethernet port conguration.
A customer doesn’t need to create a reserved space on the arrays
before the Ethernet port and HTTP service are working. The rm-
ware-embedded Web Browser-based RAID manager can access
it from any standard internet browser or from any host computer
either directly connected or via a LAN or WAN with no software or
patches required.
DHCP (Dynamic Host Conguration Protocol) is a protocol that
lets network administrators manage centrally and automate the
assignment of IP (Internet Protocol) congurations on a computer
network. When using the internet’s set of protocols (TCP/IP), in
order for a computer system to communicate to another com-
puter system, it needs a unique IP address. Without DHCP, the
IP address must be entered manually at each computer system.
DHCP lets a network administrator supervise and distribute IP
addresses from a central point. The purpose of DHCP is to provide
the automatic (dynamic) allocation of IP client congurations for