primary storage in cloudstack by mike tutkowski

Primary Storage in CloudStack

What is CloudStack?

Apache CloudStack is open source software designed to deploy and manage large networks of virtual machines as a highly available, highly scalable Infrastructure-as-a-Service (IaaS) cloud computing platform.

Compute, Network, Storage

Automation

CloudStack from the top down

Storage Use Cases & Workloads

Primary Storage Secondary Storage

Objectives Storage for running VM disk volumes on a host

Data to be stored for future retrieval

Use Cases

• Production Applications• Traditional IT Systems• Database Driven Apps• Messaging / Collaboration• Dev/Test Systems

• VM Templates• ISO Images• Disk Volume Snapshots• Backup / Archive• Image Repository

Workloads• High Change Content• Smaller, Random R/W• Higher / “Bursty” IO

• Typically More Static Content• Larger, Sequential R/W• Lower IOPS

What is Primary Storage?• Primary Storage is associated with a cluster.

• A cluster can access more than one Primary Storage.

• Primary Storage can be shared among hosts or local to a host.

• Primary Storage stores the disk volumes (both root and data disks) for all the VMs in that cluster.

• Depending on hypervisor type, there are several ways to configure Primary Storage (we shall take a look at XenServer).

Primary Storage Today (CS Version <= 4.1)

• Admin sets aside space ahead of time on the storage system (ex. creating a large volume on a SAN).

• Admin interacts with hypervisor that is in the cluster the storage will be servicing to make it aware of the new storage (ex. creating a XenServer Storage Repository).

• Admin interacts with CloudStack to create Primary Storage for the cluster based on the hypervisor data structure (in this case, the XenServer Storage Repository).

• Admin associates the Primary Storage with Compute and/or Disk Offerings.

Create a Volume on the SolidFire SAN

Create a XenServer Storage Repository

Create a XenServer Storage Repository

Create a XenServer Storage Repository

Create a XenServer Storage Repository

Create a Primary Storage in CloudStack

Create a Primary Storage in CloudStack

Create a Primary Storage in CloudStack

Create a Compute Offering in CloudStack

Create a Compute Offering in CloudStack

Create a Compute Offering in CloudStack

A Glimpse into the Future of Primary Storage

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