Archive: Posts

CEPH Storage for VMware vSphere

CEPH is a great choice for deploying large amounts of storage. It's biggest drawbacks are high storage latencies and the difficulty of making it work for VMware hosts. The Advantages of CEPH. CEPH can be installed on any ordinary servers. It clusters these servers together and presents this cluster of servers as an iSCSI target. Clustering (of servers) is a key feature so CEPH can sustain component failures without causing a storage outage and also to scale capacity linearly by simply hot...

Improving Storage Performance of Dell VRTX

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 HDD volumes. That's where VirtuCache comes in.

Improving Performance of Log Management Application at a Service Provider

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 volume of write and read operations puts pressure on existing storage infrastructure resulting in much slower than real-time...

GUI comparison, PernixData FVP vs Us – VMware Write Back Caching Software.

For the most part both our GUI and workflows are similar. This article compares, with screenshots, steps to install and configure VirtuCache and PernixData FVP. The only differences between us and Pernix stem from the fact that we leverage VMware's own capability in the areas of clustering, license management, and logging, whereas Pernix programmed these features separately within their software. Overall these additional screens add a few clicks and pages in Pernix versus us, but again I...

Infinio’s Read Caching versus Virtunet’s Read+Write Caching Software

The biggest difference is that we accelerate both reads and writes, Infinio accelerates only reads. A few others are - with us you can apply caching policy at the datastore and/or VM level versus only at the VM level with Infinio; we accelerate creation of VMs, snapshots, and other VMware kernel operations, which they don't. More details in the table below. Virtunet Systems Infinio Accelerates both reads and writes.1 Accelerates only reads. By not caching writes, not only are writes...

VMware’s vFlash Read Cache (VFRC) versus Virtunet’s Read+Write Caching

Here are the three biggest differences. We cache reads and writes, VMware's VFRC caches only reads. Caching writes improves the performance of not only writes, but also of reads, and even in a read dominated workload.1 We require no ongoing administration. Caching in our case is fully automated. All Vmware features are seamlessly supported. Versus VFRC that requires administrator intervention when doing vmotion, for creating a new VM, for maintenance mode, for VM restore from backup, VFRC...

A Counter Intuitive Approach to Solve the High Capacity, Low Latency Requirements for Video Storage

By not using dedupe, compression, or RAID, using slow HDDs in centralized storage, and moving SSDs to compute hosts, we arrived at low price per capacity and performance for video storage.

Here are unique requirements of video storage, some are obvious and others not so much, that inspired us to put together a different architecture than the conventional storage OEM design.

Improving Storage Performance at The Ark

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 increased attendance at the Ark, their VMware workload increased dramatically, which in turn resulted in performance issues within VMs. AiG turned to VirtuCache to mitigate their storage...

Improving Performance of Microsoft Dynamics AX ERP

Microsoft Dynamics AX transaction processing is write intensive and its reporting is read intensive, thus putting pressure on customer's existing storage infrastructure. By caching frequently used data from customer's existing storage to in-host SSDs, VirtuCache was able to reduce read and write latencies for AX running within VMware VMs.

EMC Fast Cache Storage Controller Based Caching for VNX Appliances versus VirtuCache Host Side Caching for Any SAN based Appliance

In case of FastCache or any storage appliance based caching, the SSD is more expensive than if the same SSD were bought retail. Also the SSD performs better in the host than in the storage appliance, since the SSD in the appliance is constrained by the network and controller. EMC FastCache is SSD based caching functionality sold by EMC for their VNX appliances. It tiers frequently used data, mainly reads, to SSDs in the appliance from slower HDDs on the appliance. VirtuCache is...
Page 1 of 212