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- Coraid SATA+RAID EtherDrive Storage Appliances
include RAID controller functionality within the
chassis to allow one or more RAID sets to be accessed
as "logical" AoE devices called "logical
blades" or "lblades". (ie. lblade
1.1 shown here is a RAID5 made up of 5 disks in
slots 0, 1, 2, 3, and 4, and accessed as one large
block storage device, such as /dev/etherd/1.1).
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- A simple console port command line interface is
provided on the SATA+RAID EtherDrive Storage Appliance
to configure the RAID setup.
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- RAID can also be done from the host, using server
RAID software.
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- Using standard Ethernet networking (ie. Ethernet
switches) the number of AoE storage devices can
be expanded.
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- Each EtherDrive storage appliance is assigned
a unique shelf number.
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- AoE packets are standard Ethernet frames, and
they can share a LAN with other LAN traffic, however
Coraid recommends a separate storage network to
insure the highest storage access performance. (ie.
separate from the client LAN traffic, as shown in
the diagram)
。
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- Using standard Ethernet networking multiple servers
can access the same storage network。
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- Storage is not captive to one server, therefore
if a server failure occurs, its storage can be mounted
by a backup server。
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- Using Ethernet you can construct redundant connections
between servers and storage, eliminating single
points of failure.
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- Clusters of servers can share common storage using
cluster filesystems.
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