NexentaStor MetroHA Stretch Cluster

Disaster Avoidance
Disaster Avoidance involves proactive
behavior to circumvent an impending
storage outage. Even if a partial site failure
occurs, disasters tend to affect an entire
site. Disaster avoidance technologies allow
for configuration of a host, cluster or site in
NexentaStor MetroHA Stretch Cluster
Protect Business from System Outages
A Stretch Cluster is a cluster configured with host systems located at multiple sites.
These may be on different floors of a data center, different buildings on a campus
or at multiple metropolitan sites located hundreds of kilometers apart. The high
availability and data mobility that stretch clusters provide make them one of the most
reliable and flexible solutions that IT administrators can implement to shuttle data
between multiple sites. Other benefits of stretch clusters include disaster recovery and
downtime avoidance.
a fashion that keeps systems
withservers attach
to the HA servers via Ethernet
minimal interruption. There may be a brief
outage at one location followed by a restart
High Availability Servers with
at the recovery site, but a minimum
Celerity FC HBAs
sustained under controlled circumstances is
considered to be an acceptable alternative to
an extended one.
Downtime Avoidance
Fibre Channel Switch
XstreamCORE FC 7500
storage controllers
Downtime Avoidance is similar to Disaster
Avoidance. The main difference is that
with Downtime Avoidance, virtualization
technologies can move virtual machines or
virtual storage with no interruption to service.
Disaster Recovery
Disaster Recovery helps to rapidly restore
services when there is an unexpected outage
and the recovery time is unknown. In these
environments, the goal is to rapidly return to
full operation, usually in a different data center.
High Availability and Fault Recovery
High availability technology reduces the
length of an outage sustained by a failure and
allows for rapid recovery of system services.
High availability clusters provide automated
fault recovery in a reactive fashion, with virtual
machines restarted as required to recover from
unplanned outages.
The Power Behind the Storage
Zero Data Center Downtime Across Metropolitan Areas or Across Campus
Eliminating downtime and protecting and maintaining access to data are key benefits
of a stretch cluster however another benefit is load balancing between sites. Load
balancing helps to maintain access to data at consistent performance levels while
distributing access between sites when one site is overloaded with user requests.
Additionally, if a failure occurs at one site, there is continued workload availability and
disaster recovery can be carried out from the second site. This type of implementation
is key for medical or college campuses, financial institutions or live production or
manufacturing sites that are spread out over a smaller geographical area.
Software Synchronicity: NexentaStor MetroHA
NexentaStor MetroHA provides a synchronous storage solution with the ability to
store data on two disparate sites. NexentaStor MetroHA combines a synchronous
storage solution with ZFS end-to-end data integrity. This provides a solution with the
best possible uptime but also ensures data integrity when transferred over the WAN.
Depending on implementation topology, Nexenta can simplify the design,
deployment, and maintenance of data center, campus or metropolitan-wide high
availability solutions.
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NexentaStor MetroHA Stretch Cluster
Protect Business from System Outages
About ATTO Technology, Inc.
High Performance for SSD Flash Integration: ATTO XstreamCORE™
For 30 years, ATTO Technology, Inc. has been
Today’s demanding data center environments are adapting to take full advantage
of the benefits of flash memory. With flash solid-state drive (SSD) devices becoming
more mainstream due to rising capacity and lower prices, system architects need to
make sure that the systems they are putting together can take advantage of flash
SSD performance capabilities. ATTO XstreamCORE™ storage controllers feature
xCORE Data. Acceleration technology with multiple parallel I/O acceleration engines,
hardware buffer allocation and real-time performance analytics. XstreamCORE™
enables MetroHA to take advantage of up to 1.47M 4K IOPS per controller pair to
provide performance for the most demanding applications. MetroHA also supports
ATTO FibreBridge® products for cost-effective Fibre Channel connectivity for
environments that require connectivity over performance.
a global leader across the IT and media &
entertainment markets, specializing in storage
and network connectivity and infrastructure
solutions for the most data-intensive
computing environments. ATTO works with
partners to deliver end-to-end solutions to
better store, manage and deliver data. Working
as an extension of customer’s design teams,
ATTO manufactures host and RAID adapters,
network adapters, storage controllers,
Thunderbolt™ adapters, and software. ATTO
solutions provide a high level of connectivity
to all storage interfaces, including Fibre
Channel, SAS/SATA, iSCSI, Ethernet, NVMe,
NVME over Fabrics and Thunderbolt.
ATTO is the Power Behind the Storage.
All trademarks, trade names, service
marks and logos referenced herein
belong to their respective companies.
About Nexenta
Nexenta is the global leader in SoftwareDefined Storage. Nexenta uniquely integrates
software-only “Open Source” collaboration
with commodity hardware-centric “SoftwareDefined Everything” innovation via its
industry-leading OpenSDx vision. Nexenta
solutions are 100% software-based and 100%
hardware-, protocol-, and app-agnostic.
Nexenta provides organizations with the “true”
benefits of Software-Defined Data Centercentric Cloud Computing. Nexenta enables
everyday apps from rich media-driven Social
Living to Mobility; from the Internet of Things
to Big Data; from OpenStack and CloudStack
to Do-It-Yourself Cloud deployments; from
Lower TCO and Decreased Latency
The NexentaStor MetroHA solution provides a low total cost of ownership by creating
enterprise class storage services on industry standard server and storage hardware.
This solution provides 24 x 7 uptime with business continuity for real-time mission
critical applications enabling organizations to virtualize these applications and
maintain high availability access. Utilizing Fibre Channel to create a high performance
SAN makes sure data is always synchronized between data center sites. It is important
to have reliable, predictable, low latency links between sites in a stretch cluster; the
ATTO XstreamCORE and FibreBridge storage controllers are building blocks that add
Enterprise Fibre Channel connectivity to up to 10 shelves of low cost SAS/SATA drives
while introducing up to only four microseconds of latency. When paired with standard
JBOD or JBOF enclosures, ATTO storage controllers represent a foundational data
center component—one that companies can use to architect stretch cluster solutions
that enable active site balancing, downtime avoidance and disaster recovery with
more flexibility and a lower TCO than native Fibre Channel storage.
Building out a Stretch Cluster The requirements for building out a stretch cluster will depend on an organization’s
needs when it comes to reliability, capacity and performance. For a high availability
solution, Software Defined Storage (SDS) software can identify multiple controllers
and communicate between multiple sites. For situations where availability is not the
top priority, a single controller will suffice—as long as a second controller is used for
redundancy at the remote site.
Private to Public to Hybrid Clouds. Founded
around an “Open Source” platform and
industry-disrupting vision, Nexenta delivers
its award- and patent-winning software-only
unified storage management solutions with a
global partner network.
The Power Behind the Storage
+1.716.691.1999 |
NexentaStor MetroHA Stretch Cluster
Protect Business from System Outages
While performance at the remote location will be dictated by the link connecting the sites, the local site can benefit from a high
performance storage controller like the ATTO XstreamCORE FC 7500. ATTO storage controllers provide options for all performance
and price needs: a pair of 7500s can deliver up to 1.47M 4K IOPS, while a pair of FibreBridge 6500 controllers can achieve about
120K 4K IOPS. Scalability is another asset of the 6500 and 7500, with both supporting up to 240 disk drives while adding Enterprise
Fibre Channel to SAS JBOD storage.
Solution Components
Controllers: ATTO XstreamCORE FC 7500 or FibreBridge 6500 storage controller
HBAs: ATTO Celerity™ 32 and 16Gb Gen 6 Fibre Channel HBAs
Software: Nexenta NexentaStor with MetroHA plugin
Server: Various models from DellEMC and Supermicro
Storage: Various models from DellEMC and Supermicro
The Power Behind the Storage
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