Write-Through Caching

25 Mar: In case the Write-Replication network fails

If the write-replication network fails, then VirtuCache keeps trying to replicate writes for 30seconds, during which time writes are not being acknowledged. After the 30 second period, VirtuCache times out the writes. Then VirtuCache freezes IO till the write cache is synced with backend SAN. Since we keep upto 2…

18 Mar: Write Through caching policy

Write-Through caching policy accelerates only reads. This is how Write-Through caching works in VirtuCache. When a block is first read by VMware from backend storage, VirtuCache immediately copies it to in-host cache media. When the block is requested again by VMware, VirtuCache now serves it from the in-host cache. As…

19 Jun: Creating a redundant network for write replication

If you plan to use Write-Back policy with write replication, you need to select a network in vSphere for write replication. Here are a few options to create a write replication network. 1. Create a new port group in your existing virtual switch that has two teamed 10gbps NIC ports…