Tag Archives: ibmcloud

Dec 2 2013

IBM SmartCloud Enterprise+ 1.3 in a nutshell

On November 19, 2013, IBM SmartCloud Enterprise+ (SCE+) version 1.3 was released. While every new SCE+ release has brought some interesting improvements, I’m particularly excited about 1.3. Tons of new features and improvements were implemented, making it worth having a closer look at the highlights of this version of SCE+.

Completely new portal. Lets be polite, but the old portal had major room for improvement. The new portal was completely rewritten and now meets requirements clients have for such an interface.

New virtual machine (VM) sizes. New standard configurations were introduced including Jumbo for x86 VMs. However, what is even more important are the new maximum possible configurations for a single VM, which can be:

  • Up to 64 vCPUs
  • Up to 128 GB RAM
  • Up to 48 TB storage

These new configurations can enable more workloads to run on SCE+.

Clustering. Even more workloads can now be enabled because of the new clustering options. Clients can choose between operating system (OS) based clustering (for all on SCE+ supported operating systems and platforms) or simple anti-collocation which enables clients to cluster VMs on the application level. Anti-collocation means that two VMs will not be provisioned on the same physical host to ensure availability of at least one node in case a host goes down.

It is important to mention that service level agreements (SLAs) are still based on the individual VM, so there is no aggregated SLA for a cluster.

Anti-collocation (and clustering) does not guarantee that the physical hosts are based in different physical buildings. Even in dual-site based SCE+ data centers, the different nodes of cluster might still be located on one site. This could potentially be removed in a later release of SCE+.

Unmanaged instances. Clients can request unmanaged virtual machines on SCE+ with the following limitations:

  • Managed VMs cannot be transformed to unmanaged ones (or the other way around)
  • Clustering is not available on unmanaged VMs
  • Unmanaged VMs must be based on available SCE+ images; there is still no way to import custom images
  • Migration services are not available for unmanaged instances

Migration services. Migration services for x86 and IBM Power System platforms can now be contracted as an optional part of an SCE+ contract.

Active Directory integration. SCE+ now supports the integration of complex Microsoft Active Directory setups including a client-specific isolated domain or even joining (managed) VMs to the client’s active directory (AD) forest.

Database and middleware alerting and management. Beside the management of the operating system, clients can now choose database and middleware management as an option in two flavors:

  • Alerting only. The client maintains responsibility, but will be alerted by an automated monitoring system in case of failure.
  • Management. IBM provides management for selected database and middleware products (mainly IBM DB2 database software, MS SQL, Oracle, Sybase and IBM WebSphere products).

Custom hostnames and FQDN. Custom hostnames and full qualified domain names (FQDN) can now be chosen during the provisioning of a server VM.

Load Balancer as a service. Beside the currently available virtual software load balancer (vLBF), load balancing as a service is also available. The new service is based on industry leading hardware appliances and provides features like SSL offloading. Currently load balancing is only supported in a single site.

Increased number of security zones. Although three security zones remain standard, clients can request up to 12 security zones if required by the design of their environment when onboarding. Additional security zones can also be requested after boarding through an Request for Service (RFS), but provisioning is then subject to availability. However, there is a hard limit of 12 security zones per client.

Summary

SCE+ 1.3 is a milestone in terms of features and new possibilities. It enables a lot more workloads to be supported on SCE+ and SCE+ based offerings like IBM SmartCloud for SAP (SC4SAP) and IBM SmartCloud for Oracle Applications (SC4Oracle).

Jul 24 2013

IBM SmartCloud Enterprise+ disaster recovery considerations for DB2

Disaster recovery on IBM SmartCloud Enterprise + (SCE+) is usually referring to infrastructure based disaster recovery. Disaster recovery (DR) solutions on the infrastructure level intend to replicate while virtual machines (VMs) include all data from the main production site to the DR site. The advantage of that kind of solution approach is that if a disaster occurs, an exact copy of the production environment including all OS settings and patches is available on the DR site. The VMs on the DR site can than be started and take over the load quite seamlessly (beside the nasty reconfiguration of site specific network settings like IP ranges).

It is planned to provide an infrastructure as a service (IaaS) DR solution as part of the SmartCloud Enterprise + offering in a later release.

Although IaaS DR solutions do their job well, they are rather expensive and complex. Mirroring complete virtual machine images does not only cost a lot of storage space but also appropriates network bandwidth and traffic. So, the question that solution architects should ask is if IaaS based DR is really required!

In many scenarios, a more cost effective and less complex solution is, to consider application level disaster recovery. Let’s take DB2 as an example for many middleware or applications that provide the ability to be either clustered on application level or keep a cold standby aside. DB2 allows us to leverage its HADR function to collect all database update operations and queue them for distribution to other nodes.

Those collected updates can be sent over the network, using a variety of technologies or protocols. The interval between send operations depends on the recovery point objective (RPO) target. A shorter interval between send operations provides a better RPO but might generate more data traffic.

DB2 HADR setup

DB2 HADR setup

Another advantage of such a setup is the ability to provide fail over tests easily. Because the DR systems are up and running all the time, their proper function can be tested at any time by just accessing them.

However, the drawback of such an application level DR solution is the fact that the standby system is required to be up and running all the time and it must be ensured that all updates to the primary system itself (like changed configurations and software patching) are also done on the standby servers.

Summary

 Application level disaster recovery is not the solution for each and every scenario, but can be a valid, cost effective and less complex alternative. Sometimes a combination of infrastructure and application level DR might be the best solution for an environment.

Dec 12 2012

Making SCE+ elastic

IBM SmartCloud Enterprise+ (SCE+) is a highly scalable cloud infrastructure targeted for productive cloud enabled managed workloads. These target workloads make SCE+ a little bit heavier than SmartCloud Enterprise (SCE). The boarding of new clients alone takes a reasonable number of days to establish all the management systems for that client. This somehow applies to provisioning virtual machines, too. Due to the service activation process that is required to be completed before a managed system can be put into production, the provisioning time of a virtual instance takes at least some hours instead of just minutes on SCE. However, that is still a major improvement compared to a traditional IT where the provision of a new server can take up to several weeks!

The benefit of SCE+ is the management and high reliability of the platform. This makes it the perfect environment for core services and production workloads that can easily grow over time to meet the business requirements of tomorrow. Even scaling down is possible to a certain extent. However, if you need to react on heavy, short peaks of load, you need a platform that is truly elastic and can scale up and down on an hourly basis.

What you need is an elastic component, put on top of SCE+ to leverage SCE+’s high reliability for the important core functions of your business application, but have the possibility to scale out to a much lighter – and probably cheaper – platform for short peaks to cover the load. SCE provides all the necessary features you would expect from that elastic platform.



As shown in the video, f5’s BIG IP appliance can be used to control load on servers and scale out dynamically to SCE as required. The base infrastructure could be SCE+ as well as any other environment. However, what is required is a network connection between SCE and SCE+ as this is not part of any of the offerings.

The easiest way to establish a layer three connectivity between SCE and SCE+ is to create a Virtual Private Network tunnel between the two environments. Several options for that are feasible:

  • Connecting a software VPN device or appliance on SCE to the official SCE+ VPN service
  • Connecting a hardware VPN device or appliance on SCE+ to the official SCE VPN service
  • Use the Virtela Meet VPN service to interconnect VPN tunnels from both environments.

Summary:

SmartCloud Enterprise can be used to make SmartCloud Enterprise+ elastic. Several options exist to interconnect the two environments and leverage the benefits of both environments for specific use cases!