The Next Generation of Performance Optimization

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11 Ιαν 2012 (πριν από 6 χρόνια και 1 μέρα)

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The traditional capacity-based performance solutions are proving ineffective at keeping up with enterprise data demand. Due to the increased infrastructure complexity and associated operational headaches, these approaches are a poor fit to deal with exponential data growth. Data centers need to move beyond the approach of adding capacity to get performance and begin implementing solutions specifically targeted to NAS acceleration.

 
 



1


T
he

traditional capacity
-
based performance
solutions

are proving ineffective

at keeping up with enterprise data demand
.

Due
to the

increased
infrastructure
complexity and
associated
operational
headaches
,

these
approaches

are

a poor fit to deal with

exponential
data
growth
. Data centers need to move beyond
the
approach of
add
ing

capacity
to get performance
and begin
implementing solutions specifically targeted to
NAS
acceleration
.

Before
discussing specifics
,
it is important

to have a clear idea of what these next generation
NAS performance
solutions look
like and how they diff
er

from traditional approaches.

These

approaches focus on
one
-
size
-
fits
-
all solution
s
, such as
overprovision
ing
,

and
tend to improve certain metrics while aggravating others. For example, adding spindle count in order to
improve IOPS stresses the storage

con
troller

and
,

after a certain point, will result in higher latency. Managers may not even
see a real improvement in IOPS unless the controller itself is upgraded. Rather than
a broad
-
brush approach of

throwing
capacity at performance issues, performance solutions
need to be

targeted and specific. This
will create

real value and
specific, measurable improvement
s

while keeping costs down.

Jeff Boles, a senior analyst at storage industry research firm th
e Taneja Group, offers
the following

simple parameters for t
rue
performance
-
based solutions:

“Fundamentally, a solution should give you real performance and promise to scale well beyond
what you need today. Simultaneously, it shouldn’t look entirely differ
ent than your existing storage. It should still store data in
a permanent, reliable way and be just as serviceable.”

Pinpointing
S
torage
P
erformance

So, how do
es

one

judge “real performanc
e
?


Storage systems have long been
assessed

by a variety of metrics
, but the bottom line almost always fall
s

to
capacity
-
based mea
sures e.g.

cost/GB, GB/watt

and
percent utilization. These
metrics

assess the value of a storage system almost solely in light of the
system’s
physical size and associated costs. While these remain an important
factor
,
performance
-
based solutions require a shift in the weight of consideration
to
wards performance metrics

such as

c
ost/IOP,
a
ct
ivity

per watt

and
b
andwidth
per watt.
If m
anagers make
performance purchases in order

to deliver enhanced
operations,

why judge these solutions
in
terms of
size metrics?

Storage
Performance
IOPS

Throughput
Latency
The Next Generation of
Performance Optimization

 

2

In the Network World article
Storage
c
apacity
p
roblem is
often really about performance
,

John Burke of Nemertes Research
explains that storage performance is determined by three primary components: IOP
S
, the speed at which the storage system
can process requests, throughput, the volume of data a storage system can push through to requesting e
ntities
,

and latency,
the delay between requesting data and receiving it. Unlike capacity
-
based solutions, true performance solutions can improve
one or all of these operational metrics without negatively impacting
the

others.

The RapidCache Performance S
olution

Performance solutions can come in a variety of forms. Perhaps the most effective are caching appliances
that

ac
celerate the
performance of

storage syst
ems. Cache IQ

RapidCache is a

next
-
generati
on solution that creates system
-
wide operational
gains by strategically focusing on the factors
that

determine performance. RapidCache is a
NAS
caching appliance that sits
in
-
line between the server and storage controller and focuses on accelerating the performance of your most critical
data. By
storing it in DRAM and SSDs, RapidCache increases IOPS, optimizes throu
ghput

and decreases the response time for the
data your enterprise
s need

most.

Over the last few years,
the most talked about technological upgrade in the storage industry has
been the integration of solid
state technology into storage environments. The gains made by utilizing
solid
-
state

technology are clear
,

as
shown

below

i
n

OCZ’s
side
-
by
-
side

comparison of HDD and SSD technology:






A single RapidCache Data Server deploys

with 144 GB of DRAM and allows a storage manager to add up to 3.2 TB of SSD
in a completely non
-
disruptive expansion process. Furthermore, RapidCache employs a

clustering model in which managers
can dynamically add or remove data servers based on network
traffic performance

requir
ements, resiliency requirements

and
cache capacity. RapidCache also allows managers to
add nodes within a live cluster

without any need to go offline.

Finally, a storage performance solution needs to be just as capable
as
existing architecture

d
ata storage and access
must

be permanent and reliab
le

and the equipment needs to be easily serviceable. RapidCache will never lo
se
data because the
system
stores
a read
-
only ve
rsion copied directly from
storage. All write operati
ons pass straight through
the appliance
to

backend file servers.
Additionally
, RapidCache uses the highest quality enter
prise
-
grade component hardware

and utilizes
redundant power supplies,

fans and network connectivity to guarantee uptime
.


The Next Generation of Performance Optimization

 

3

M
aintenance is just as seamless as scaling. Redundant Flow Directors leverage the
h
igh
-
availability environment data

centers
already have built
-
in. In addition to providing protection against failure, R
apidCache’s bypass mode can

be manually enabled
to allow all nodes to be updated or serviced. Alternatively, if only an individual node within a c
luster needs to be updated,

managers can do so live while the other nodes remain operational. There is never a
n interruption of service, and client
applications continue to run.

Master
M
etadata
M
anagement

IDC’s 2011 Digital Universe Study found that metadata is growing at a rate
double that of associated data.
RapidCache
provides data managers the t
ools to tackle

this
growth
-
driver
head on. Absorbing

most metadata operations,

RapidCache

reliev
es

overworked file server processors and memory
,

allowing
file servers

to
focus on their core functions.
By taking over
metadata operations, RapidCache
can actually improve

t
he
read and write
performance of

existing
file servers
.

Resolve the
U
nderutilization
D
ilemma

Th
e RapidCache solution allows enterprises

to target
their

most critical enterprise data and store it on lightning fast

DRAM
and SSD
s.
E
xisting storage no longer needs to be overprovisioned or

short stroked for performance, as
underutilization is
now an outdated technique. RapidCache allows storage managers
to fill existing disks to capacity as well as maximize the
number of disks per storage controller. Enterprises can
now
leverage their existing storage by fully
utilizing

cost
-
effective,
depreciated
equipment

while

realizing the benefits of high
-
end
SSD

tec
hnology.

According to CIO Magazine,

enter
prise storage systems
are
60 to 80 percent underutilized,
with budgets
currently carrying massive environmental expenditures for disk space not being
used at all.

This architecture is incredibly inefficient

and

exacerbate
s

already tight stor
age
budgets. InformationWeek’s
Analytics State of Enterpri
se Storage Survey

reports that

since
the crunch of budget contractions during the 2008
-
2009 recession, around 55% of enterprise
data centers have been “handling double
-
digit growth rates with single
-
digit b
udget
increases…” The remainder
s, around 45%, are

forced to exploit flat or shrinking budgets to manage their data growth.

Couple the magnified costs of underutilization together with anemic budgets, and it becomes imp
erative for storage
managers to make performance purchase decisions that are highly efficient

maximizing value and ROI for every dollar spent.

A RapidCache installation allows managers to implement
leading
-
edge DRAM and SSD technology cost
-
effectively into their
architectures while simultaneously reclaiming dead platter space and moving their storage systems to the next plateau of
functional efficiency. Data centers have already invested in rack spac
e, power

supplies

and cooling systems for their existing

a
rchitectures, so

w
hy not implement a solution
that

not only utilizes cutt
ing
-
edge solid state technology

but also maximizes
the ROI of these considerable existing investments?

 
True performance
solutions create
system
-
wide
improvements by
targeting specific
performance gains

The Next Generation of Performance Optimization

 

4

Cache IQ

provides the

most advanced and efficient automated data management software available. With its powerful packet
inspection engine, RapidCache lea
rns the content of data streams

and
,

at wire
-
speed, makes
decisions to allocate high
-
performance resources
when and where t
hey are most needed
. Further
more
, RapidCache adapts to shifting data demands
and
automatically
promotes or demotes blocks between ti
ers or completely out of cache
. The most importa
nt applications
are prioritized

and only the right data is cached.

Creating

a
P
erformance
T
ier

Deploying a next generation solution like RapidCache will allow storage managers to abandon out
-
of
-
date techniques like
overprovisioning, while taking advant
age of the latest flash hardware
. By
effectively
decou
pling performance from
capacity
,

administrators can focus on implementing a
performance tier
,

allowing them to more efficiently utilize their existing storage
and spend less on capacity.




phone

512
-
354
-
1254 info@cacheiq.com www.cacheiq.com

Copyright © 2011 Cache IQ,
Inc. All rights reserved

The Next Generation of Performance Optimization