September 1, 2020; Connecticut, USA. WAN latency does not contribute to VM latencies when a storage array fails in a VMware metro / stretched cluster when all storage IO is cached to VMware host Flash or RAM. This post discusses how VirtuCache did this for Mashantucket casinos, by explaining the…
Storage Performance
March 7, 2020: As it relates to storage, genome sequencing workflow has two requirements. Need for cheap ($/GB) Petabyte scale storage. Need for faster processing of Genome files under analysis, each file is a few hundred GB in size.
Only read performance is improved by HP MSA’s internal caching and tiering features.1 In comparison, VirtuCache improves the performance of reads and writes for MSA, and it does so by caching to in-VMware host SSD or RAM. There are other differences as well. SSD in the ESXi host will perform…
Business Intelligence, Log Management, Security Information & Event Management (SIEM), Search and Analytic software like Splunk, Elastic Search, Cognos, HP Vertica, HP Autonomy, need to provide real-time visibility into large volumes of fast changing data. When these applications are deployed in traditional VMware VMs connected to centralized storage, such large…
CEPH is a popular open source storage software. However its write latencies are high. VirtuCache caches CEPH volumes to in-host SSDs and by doing so reduces VM level latencies considerably.
ServiceNow’s Dev/Ops team wanted to improve storage performance from their existing HP 3PAR all-flash storage appliance and iSCSI storage network. VirtuCache Deployment Virtucache was installed on 24 ESXi hosts caching to 1.6TB PM1725 PCIe flash cards. Each PM1725 SSD was performing at between 100-250MBps throughput at 1-5ms VM level latencies….
April 15, 2020: City of Mountain View is using VirtuCache to improve the performance of Netapp’s Ontap Select storage software. They were one of our first customers to upgrade to ESXi 7.0 and so they had to upgrade VirtuCache as well. We announced General Availability of VirtuCache for ESXi 7…
There are only a few applications, financial trading software being one example, that require very low latencies, lower even than what’s possible with an all-flash array (AFA). VirtuCache caching to in-host RAM results in lower VM latencies than an AFA. This is because RAM latencies are an order of magnitude…
Dell’s PowerEdge VRTX hyper-converged appliance can either have all hard drive datastores or all SSD datastores, but you can’t have SSDs act as tiering or caching media for VRTX volumes. That’s where VirtuCache comes in.
The Ark Encounter, in Williamstown, Kentucky, features a full-size Noah’s Ark built according to the dimensions of the Bible. Answers in Genesis (AiG) is the Christian ministry responsible for The Ark Encounter. AiG’s IT department had a few ESXi hosts connected to their HP Store VSA. As a result of…