WDM SOLUTIONS FOR
SIMPLE AND SUSTAINABLE
STORAGE NETWORKS
Is your storage network capable of responding How does green IT impact on WDM-based networks?
to today’s business demands? Is your network
( Q W H U S U L V H V D U H L Q F U H D V L Q J O \ V H H N L Q J W R D G R S W
H Q H U J \ H I � F L H Q W " , V \ R X U G D W D V H F X U H " & K U L V W L D Q H Q H U J \ H I � F L H Q W Q H W Z R U N L Q J V R O X W L R Q V W R U H G X F H W K H L U
environmental impact and to lower their increasing
Illmer, Senior Director of Enterprise Business
, 7 E X G J H W V ( Q V X U L Q J , 7 E X G J H W V D U H V X V W D L Q D E O H
Development at ADVA Optical Networking,
is critical in today’s economic climate. As global
answers your questions.
recession deepens and the cost of power continues to
What role does Wavelength Division Multiplexing
surge, enterprises may soon be unable to adequately
(WDM) play in the storage networking world?
power their storage networks and their attached data
Next-generation WDM units are the key enablers to
centres. The key to achieving a sustainable storage
developing the most effective storage networking
network is to migrate from a switch/router-intensive
solutions. Optical networks built on a WDM platform
infrastructure to a transport-centric architecture that
provide enterprises with the scalable bandwidth they
incorporates next-generation WDM systems, which
need to transport increasing amounts of data (up to
possess a very small footprint and offer low power
3.2 Terabits per second) at the lowest latency possible,
consumption.
allowing high-end run-time-sensitive applications to Where is the storage and WDM market heading in
operate across large distances at their limit. This is regards to interfaces?
vital in mission-critical environments where data has
There are two key interface trends:
to be accessed, stored and protected on a continuous
:: The demand for increased bandwidth and the
basis.
drive for higher bitrates. This is seen most
Is WDM complex?
dramatically with Fibre Channel (FC), where in
WDM technology is one of the simplest and yet most
only several years, it has developed from 1 to 2 to
effective solutions available in the storage network.
4 to 8 and now to 10Gbit/s.
WDM units dramatically increase the data capacity
7 K H G H Y H O R S P H Q W R I ( W K H U Q H W I U R P D / $ 1 S U R W R F R O
R I � E U H E \ D V V L J Q L Q J G D W D V W U H D P V W R O L J K W Z D Y H V R I
W R D 6 $ 1 W H F K Q R O R J \ $ O W K R X J K ( W K H U Q H W V W L O O
different colours and transmitting them in parallel
lacks some of FC’s qualities, the development
W K U R X J K W K H � E U H % X L O W R Q D P R G X O D U D U F K L W H F W X U H
R I & R Q Y H U J H Q F H ( Q K D Q F H G ( W K H U Q H W & ( ( D Q G
: ' 0 V \ V W H P V D O O R Z I R U � H [ L E O H K D Q G O L Q J R I L Q G L Y L G X D O
' D W D & H Q W U H ( W K H U Q H W ' & ( L Q G L F D W H V W K D W L W Z L O O
wavelengths that can be tailor-made to respond to
V R R Q E H D E O H W R S U R F H V V V W R U D J H W U D I � F L Q W K H V D P H
V S H F L � F Q H W Z R U N G H P D Q G V
reliable and low-latency manner that FC networks
do today. The effects of this will result in one
What are the most important features for WDM
X Q L � H G G D W D Q H W Z R U N L Q J S U R W R F R O G U D Z L Q J V W R U D J H
systems?
F O X V W H U D Q G / $ 1 W U D I � F R Q W R R Q H F R Q Y H U J H G
Storage network demands are continually evolving.
platform.
To ensure these demands are met, next-generation
: ' 0 V \ V W H P V G H O L Y H U D � H [ L E O H D Q G W U D Q V S D U H Q W
, V � E U H R S W L F W U D Q V P L V V L R Q V H F X U H "
foundation that ensures the:
Storage networks are experiencing exponential
:: Transport of all common storage interfaces,
J U R Z W K L Q W K H W U D Q V S R U W D W L R Q R I K L J K O \ F R Q � G H Q W L D O D Q G
L Q F O X G L Q J ) L E U H & K D Q Q H O , Q � Q L % D Q G D Q G ( W K H U Q H W
mission-critical data. As such, it is a growing target
:: Low-latency support of synchronous mirroring
for acts of data theft. To ensure data protection and
in point-to-point and ring architectures
continuous network performance, Layer 1 encryption
solutions are now available. Until now, enterprises
4 X D O L � H G L Q W H U R S H U D E L O L W \ Z L W K D O O F R P P R Q V W R U D J H
have tended to focus on encryption at Layer 3 based
vendors
on IP security. However, this expands data packet
:: Distance extension to several hundred kilometres
V L ] H D Q G D G G V O D W H Q F \ V L J Q L � F D Q W O \ V O R Z L Q J G D W D
with no intermediate regeneration
transportation. In mission-critical environments this
is unacceptable. Layer 1 encryption removes these
L Q H I � F L H Q F L H V S U R Y L G L Q J D O R Z F R V W K L J K S H U I R U P D Q F H
and protocol-agnostic solution that reduces complexity
and minimises latency.
For further information on how ADVA Optical
Networking can help your business please visit:
www.advaoptical.com
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