Global Legal Discovery needed a cost-effective storage solution to store and search millions of legal documents. They implemented a unified storage appliance from Silicon Mechanics configured with a software-defined storage model using NexentaStor. This provided high performance storage and archive tiers on the same platform at a fraction of the cost of traditional tiered storage. Global Legal has since expanded the implementation from 3.3TB to over 200TB in storage, saving huge costs compared to legacy hardware solutions.

1. Glo
Global obal Legal Discovery
A case study in storage solutions

2. Unified Storage is Crucial Part of
Search and Discovery for the
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New software-defined storage paradigm based on open standards
Global Legal Discovery, an Atlanta, Georgia-based firm that provides electronic
discovery services, is riding the wave of a new and exploding market —
storing, retrieving, and searching millions of documents that may be required in
the event of an electronic discovery (eDiscovery) request. The efficiency and
cost of storing this ever-growing mountain of legal data led Global Legal to find
a storage infrastructure that could handle its rapidly expanding volume while
still guaranteeing performance and reliability.
Enter Silicon Mechanics, a Seagate Cloud Builder Alliance partner, which is
focused on helping customers move to cloud computing without handcuffing
them to legacy proprietary hardware. Silicon Mechanics configured a unified
storage appliance specifically tailored to meet Global Legal’s needs, using a
software-defined storage model at a fraction of the cost of legacy tiered
storage.
The unified storage appliance, called zStax StorCore, gives Global Legal the
ability to have both high-performance and archive tiers running on the same
platform, making it just what Global Legal needed for analyzing large numbers
of documents. The zStax StorCore is built on industry-standard hardware, and
powered by NexentaStor, an enterprise-level software-defined storage platform
based on open-source ZFS technology. In addition, unlike legacy storage
systems, with zStax users can move data and replicate it for disaster recovery
at no additional cost.
Global Legal implemented the platform with 3.3 terabytes of storage, and has
since increased to more than 200 TB, at huge cost savings over most legacy
hardware storage products.
Information collection brings storage challenges
Enterprises today collect and store huge amounts of data, and the storage
challenge is expected to become more prominent in coming years. According
to IDC’s The Digital Universe in 2020, “From 2005 to 2020, the digital universe
will grow by a factor of 300, from 130 exabytes to 40,000 exabytes, or 40
trillion gigabytes (more than 5,200 gigabytes for every man, woman, and child
in 2020). From now until 2020, the digital universe will about double every two
years.” 1
Global Legal Discovery is a case in point, as it delivers web-hosted document
review and storage solutions to a wide range of customers, including top
national law firms, Fortune 500 companies, and even small startups. Their
legal sector clients are well aware of the need to both retain data and access it
efficiently. Search and discovery presents a unique challenge for law firms, as

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compliance provisions require paperwork to be stored for extended periods of
time.
Sheer volume was not the only problem Global Legal had to address — they
also had to be able to help their clients use their vast collections. In addition to
requiring data storage and access, Global’s clients depend on rapid transfer,
processing, analysis, conversion, indexing, and search of this information, with
web remote access. Further, the nature of litigation and client workflows makes
for frequent unpredictability and surprises. A highly available, low-latency
environment is critical for data to be highly accessible by multiple applications
simultaneously across all projects. The efficiency of these processes and the
cost of storing data can dramatically affect the expenses enterprises encounter
when faced with litigation or internal inquiries.
Global Legal leverages tiered storage
Meeting document storage compliance requirements has become an efficiency
and cost nightmare, and Jonathan Gudger, program manager for Global Legal,
explained that there were three core needs that guided the company’s search
for an infrastructure solution:
• Efficient storage for long-term archival data
• High performance for the company’s active environments
• Highly available infrastructure
Global Legal spent approximately six months in the vendor selection process.
They eventually turned to Silicon Mechanics, a Seagate Cloud Builder Alliance
partner. One of the factors that made Silicon Mechanics the best option is that
its zStax family of storage appliances is powered by NexentaStor, a software-defined
storage solution that does not require the use of specific proprietary
drives and other hardware. This not only reduces total cost of ownership but
also has a positive impact on long-term performance and scalability.
The solution uses a tiered storage environment, which allows businesses to
classify data and store it according to different performance and reliability
needs. High-performance and archive tiers run on the same platform. The base
system includes support for numerous protocols, including Internet Small
Computer System Interface (iSCSI), Common Internet File System (CIFS), and
Network File System (NFS).
Gudger explained how his company uses Silicon Mechanics’ solution to
manage data that requires high input/output operations per second (IOPS) and
throughput, balanced with long-term retention needs.
Tier 1 – Seagate Enterprise 15K RPM drives supported by a layer of SSD
cache for high-performance, low-latency workloads.

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Tier 2 – Primarily Seagate Enterprise Capacity 7200 RPM drives in mirrored
pairs, which continuously collect data from Tier 1 to provide redundancy. This
tier can stand in for Tier 1 in case of a catastrophic event.
Tier 3 – Seagate Enterprise Capacity drives in dual-parity RAID (redundant
array of independent disks) volumes, which provide long-term data retention.
“We believe we’re relying on technologies that our competitors are not,
including solid-state cache, 10Gb Ethernet, and a ZFS storage pool supported
by Seagate hardware,” said Gudger. “These components are part of our secret
sauce that allows us to deliver a very high throughput.”
The infrastructure backbone that Global Legal has created with Silicon
Mechanics is now an essential component of the value it offers to its
customers. Gudger estimated that this IT environment is now linked directly to
more than a third of the company’s revenue.
Decoupling software from underlying hardware is key to storage model
Steve Scherer, solutions manager for Silicon Mechanics, explains that zStax is
built on NexentaStor’s software-defined storage architecture, a radical
departure that decouples software from its underlying hardware. With the
traditional storage model, legacy vendors develop storage software
themselves but deploy it on proprietary hardware.
“By decoupling the storage software from the hardware, we can deploy
enterprise-grade software on industry-standard hardware,” Scherer said. “The
end user is not locked into any particular hardware platform. It’s a new
paradigm, and it’s all based on open standards.” Leveraging software-defined
storage to avoid vendor lock-in can save customers like Global Legal up to 80
percent over proprietary legacy solutions.
Scherer explained that reduced cost is not the only benefit to this model. By
using software-defined storage, the customer can decide when to deploy new
hardware: adding capacity or upgrading to next-generation hardware can be
determined by the customer’s needs, not the vendor’s roadmap. While many
legacy vendors deploy hardware platforms that are generations behind, using
the open philosophy allows Silicon Mechanics to quickly leverage the best the
industry has to offer. Silicon Mechanics has already deployed many Seagate
Enterprise SSDs as well as Seagate Enterprise Performance 15K drives to
build out this tiered infrastructure and will continue to rely on Seagate
technology to ensure cutting-edge performance in future.
A breadth of expertise for implementation and support
The infrastructure backbone that provides the foundation for cloud services is a
critical part of any deployment, but optimizing investment in the technology

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requires effective implementation and support. One of the reasons this
deployment has been so successful is that Global Legal has been able to
leverage a deep pool of expertise to help them align their unique IT-centric
needs with their desired business outcomes. Rather than overspend on
hardware, the company was able to right-size its solution, while allowing for a
high level of scalability.
In fact, Global Legal’s initial deployment was close to 3 TB in total capacity and
has since expanded to more than 200 TB across multiple platforms. The total
cost of ownership of a similar system using proprietary solutions would have
been significantly higher due to the number of architecture upgrades that
would have been required. Because Global Legal went with a solution built on
open standards, it has been able to scale cost effectively without making
sacrifices in such other key areas as reliability and performance.
While companies may migrate assets to the cloud for any number of reasons,
the common theme emerging from different deployments is that the “one-size-fits-
all” approach no longer meets the needs of modern businesses. Silicon
Mechanics addresses these varied market demands through the development
of its tiered storage system as well as by leveraging technology and expertise
from the Seagate Cloud Builder Alliance. As a world leader in hard disk drives
and storage solutions, Seagate offers a great variety of enterprise-grade hard-disk,
solid-state, and hybrid storage technologies, so businesses like Global
Legal can customize their infrastructures based on their unique capacity and
performance needs.
“Right from the beginning we wanted to go after highly available back-end
storage for virtualization, and Seagate met the challenge of providing Tier 1
storage,” said Scherer. As a Seagate Cloud Builder Alliance partner, Silicon
Mechanics has access to the latest drives as well as expertise in determining
which storage devices will provide the most value for its customers. This allows
the company to take a business need, use its own industry expertise to
determine compute and storage requirements, and collaborate with Seagate to
translate those requirements into the best devices for every new project.

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Source:
1. IDC Digital Universe Study, sponsored by EMC, December 2012.
About Silicon Mechanics
Silicon Mechanics, Inc. is an industry-leading provider of rackmount server,
storage, and high-performance computing solutions. Deploying the latest
innovations in hardware and software technology, we work in collaboration with
our customers to design and build the most efficient, cost-effective technology
solution for their needs. Our guiding principle, “Expert included,” is our promise
that reflects our passion for complete customer satisfaction, from server and
component selection to superior installation and ongoing technical support.
Silicon Mechanics has been recognized as one of the fastest growing
companies in the Greater Seattle Technology Corridor.
About Global Legal Discovery, LLC
Global Legal Discovery is a highly motivated team of project managers and e
discovery specialists dedicated to providing document and ESI solutions to law
firms and corporate legal departments. Our upper management team has over
35 years combined experience in litigation support. Our mission is to provide
superior customer service to our clients while maintaining a rewarding and
exciting working environment for all of our team members.

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