VirtuCache improves storage performance of VMware VMs in a non-disruptive fashion.

VirtuCache is driver software that you would install in ESXi host(s). Then you’d assign some amount of spare in-VMware host RAM and/or an in-VMware host SSD to it. VirtuCache will then automatically cache frequently used reads and all recent writes from Datastores or VMs, that you choose to cache, to this in-VMware host cache media. By doing so VirtuCache improves the performance of applications running in VMs, and allows you to increase VM density per host.

VirtuCache deployment is seamless, in the sense that applications or end users don’t realize that most of the data is now always read from and always first written to the in-host cache media, instead of backend SAN storage. Deploying VirtuCache doesn’t require any storage, network, or host reconfiguration.

It is extremely easy to deploy and manage. You can choose to evaluate VirtuCache by registering for VirtuCache download here.

Click here for technical details around how VirtuCache caches reads and writes; syncs writes to backend storage appliance; and protects against data loss in case of host failure.

We compete with SSD based storage appliances, SSD based hyper-converged hardware, and other host side caching software.

Versus SSD based storage appliances and hyper-converged infrastructure(HCI).

  1. Unlike an upgrade to HCI or SSD based arrays, in the case of VirtuCache, you don’t need to replace your existing storage appliance or network.

  2. VirtuCache is higher performing than SSD based storage appliances because in our case the SSD is right on the motherboard of the VMware host CPU that consumes hot data, and this SSD is connected to the host CPU over a dedicated PCIe/SATA bus. In the case of storage appliances, the SSD is behind the shared storage network and storage controllers.

  3. If you choose to use in-VMware host RAM as cache media with VirtuCache, then it is the highest performing storage solution in the market. Storage appliances and hyper-converged boxes are not capable of using large amounts of RAM in the storage IO path.

  4. VirtuCache is similar to HCI in the sense that high speed storage is back in the host.

  5. Unlike HCI, VirtuCache only moves the performance tier to the VMware host, the capacity tier stays in the backend SAN appliance, so you can scale performance and capacity independently.

VirtuCache vs. other host side caching software.

  1. We cache reads and writes, the others cache only reads.

  2. There are additional differentiators around performance, caching flexibility, and support for advanced VMware features, owing to the fact that they are in the VMware userspace and apply caching policy only at the VM vDisk level, versus we can cache at the VMware kernel, Datastore and/or VM level, and we are in the VMware kernel.

  3. Click here for details about how we compete with other host side caching vendors.

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