Archive: Posts

CEPH Storage with Server Side Caching for Genomics

March 7, 2019:

As it relates to storage, genome sequencing workflow has two requirements.

  1. Need for cheap ($/GB) Petabyte scale storage.

  2. Need for faster processing of Genome files under analysis, many of which are a few hundred GB in size.

Reducing Build Times for DevOps

April 12, 2018: ServiceNow's Itapp Dev/Ops team wanted to improve storage performance from their existing HP 3PAR storage appliance and iSCSI storage network without requiring a hardware refresh. VirtuCache Deployment: Virtucache was installed on 3 ESXi hosts caching to 1.6TB PM1725 PCIE flash cards. In our tests the PM1725 SSD did 250MBps at 1ms VM level latencies. VirtuCache was configured to cache both reads and writes for all VMs (Write-Back caching). Writes were replicated to another...