sme high availibility options - storage made easy€¦ · uses the mysql database to store...

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Inves tor Newslet terStorage Made Easy Cloud ApplianceHigh Availability Options

The SME Data Access Platform enables organizations to get rich functionality, tooling, and features from an underlying storage clouds. This can be a public storage cloud such as Amazon S3, or a private in-house storage based infrastructure.

The platform can be provided as a managed service in a local data centre, or it can be provided as an appliance that resides in-situ on the customer premises.

The SME platform uses an Apache HTTP server to serve HTTP requests and also uses the MySQL Database to store meta-data.

Both these technologies are widely used and provide failover, backup capabilities and a path to scale out the application. As the SME platform is built using industry standard best practices, any of the high availability architectures can be deployed depending on the customer requirements.

In this document we will provide some different supported High Availability options. Note that depending on your requirements different combinations of the below topologies can also be configured.

WHAT IS THE CLOUD APPLIANCE ?

The SME Cloud Appliance is a software platform that enables companies to enhance their existing storage or ‘Cloud’ proposition. The Platform is a multi-tenant solution that works with existing private storage clouds, and publicly available storage clouds. These clouds are unified for easy access and management. The Appliance can be very quickly configured to be a hybrid fileserver ‘front-end’ to existing storage clouds. It features user management, secure file sharing, access control, and event auditing / e-compliance features ‘built in’.

The Platform is delivered as a VMWARE Appliance* and can be integrated with over 35 storage Clouds, and works using meta-data ‘indexing’ technology that stores information about files that are hosted in one or more storage locations thus ensuring data does not have to be replicated (although it can be configured to do this as well for speedy access to files).

The Platform quickly enables access and integration points that encompass all variety of operating systems, and all major mobile and tablet vendors, and is an enabler for ‘Bring your own Device’.

* Ask for other hypervisor options

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SME CLOUD APPLIANCE HIGH AVAILABILITY

ARCHITECTURE OVERVIEW





In a normal configuration the SME platform is run as a single appliance on a single hardware machine. This is the simplest scenario and we recommend performing regular scheduled backups of the database using the provided scripts.

Pros:

- Simplest configuration, plug and play, easy to setup

Cons:

In case of disk failure the data needs to be restored using the last backup15 minutes or more service unavailability depending on the restore time from backup

SINGLE APPLIANCE

Mobile FTP / WebDav / S3

WorkstationLaptop

SME Appliance

MySQL DB

Apache HTTP Server





This deployment topology relies on the MySQL DB master slave replication functionality. To provide simple failover during normal operation the data will be replicated to a slave database instance. The active server will have a Virtual IP address assigned to it.

In the event of a failover occurring you will need to manually run a script on the passive slave to make it active and also assign it the Virtual IP address.

Pros:

- Simple configuration- Less hardware required

Cons:

- Manual intervention required- Virtual IP address


WorkstationLaptop

SME Appliance

MySQL DB

Apache HTTP Server

SME Appliance

MySQL DB

Apache HTTP Server

MySql Replication

HTTP LoadBalancer

TWO REPLICATED APPLIANCES





Failover:

TWO REPLICATED APPLIANCES (CONT.)


WorkstationLaptop

SMEStorage Appliance

MySQL DB

Apache HTTP Server

SMEStorage Appliance

MySQL DB

Apache HTTP Server





Depending on your requirements we also support more robust deployments with HTTP Load balancing. In this scenario.

We put a HTTP load balancer (this can also be made Highly Available) in front of the two SME storage appliances and there is no single point of failure.

Pros:

- No single point of failure- Provides hardware and software redundancy- Minimal downtime

Cons:

- Higher cost of setup as more hardware required


WorkstationLaptop

SME Appliance

MySQL DB

Apache HTTP Server

SME Appliance

MySQL DB

Apache HTTP Server

MySql Replication

HTTP LoadBalancer

TWO APPLIANCES WITH HTTP LOAD BALANCER




Inves tor Newslet ter

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Storage Made Easy Cloud Appliance’ High Availability Options

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sme high availibility options - storage made easy€¦ · uses the mysql database to store...

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