Category Archive for: ‘Competitive Differentiators’

High Speed Storage is Back in the VMware Host with Hyper Converged Infrastructure and Host Side Caching, but the similarities end there….

The main advantage that hyper-converged infrastructure(HCI) has over traditional converged infrastructure (separate hardware for compute and storage) is that HCI has put high speed storage back in the compute nodes. This is also true for Host Side Caching software, with the added benefit that host side caching maintains the flexibility that Converged Infrastructure (CI) always had over HCI, that of being able to scale and do maintenance on compute and storage hardware independently of each...

Storage IO path in VSAN versus VirtuCache Host Side Caching.

Storage IO path in VSAN and VirtuCache are similar to a large extent, since both service storage IO from in-VMware host media. Though with VirtuCache, storage latencies are lower than with VSAN for four reasons: Reads are almost always serviced from local cache media in VirtuCache. In VSAN there is a high chance that all reads might be serviced over the network from another host; In addition to SSD, with VirtuCache you can cache to RAM which is the highest performing media there is,...

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

VMware will discontinue VFRC starting in ESXi 7.0 to be released in Q4 2019. 0 Despite the end-of-life announcement for VFRC, if you still want to review the differences between VFRC and VirtuCache, below are the three most important ones. We cache reads and writes, VMware's VFRC caches only reads. Caching writes improves the performance of not only writes, but also of reads.1 We require no ongoing administration. Caching in our case is fully automated, and all Vmware features are...

View Storage Accelerator vs. VirtuCache – VMware Host Side Storage Caching

The big difference between the two is that VSA caches only 2GB of reads from the Master VM1,2. VirtuCache caches reads + writes from all server & desktop VMs, and it can cache to TBs of in-host SSD/RAM, so that all storage IO is serviced from in-host cache.

More details in the table below.

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

The biggest differences are: We accelerate both reads and writes, Infinio accelerates only reads. Infinio doesn't support Linked Clones or Non Persistent VDI. We support all VDI features. With us you can apply caching policy at the datastore and/or VM level versus only at the VM level with Infinio. We accelerate IO originating in VMware kernel and VMs, versus only VM generated IO is accelerated by...

Citrix MCS IO vs. VirtuCache – Server Side Storage IO Caching

Both cache 'hot' data to in-host RAM, but the differences between Citrix MCS Storage Optimization and VirtuCache are many. The top three are: - MCSIO works only for non-persistent Xenapp / Xendesktop VMs.1 VirtuCache works for all VMs on the ESXi host; - Citrix MCSIO can cache only VM writes and to VM RAM only.1 VirtuCache can cache VM reads and writes to in-host SSD or RAM; - With MCSIO there will be VM data loss / instability if the host fails or the RAM cache is full,1 not so...

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...

Virtunet Read + Write Caching Versus Datrium Read Only Caching, Part II.

In our first article, we explained the differences between our host side caching software (VirtuCache) and Datrium's (DVX DiESL). To summarize the first article, VirtuCache differs from DVX DiESL in 3 ways - (1) VirtuCache caches reads and writes to in-host cache media, Datrium caches only reads; (2) DVX DiESL only works for Datrium's own appliance, VirtuCache works for any appliance; and (3) VirtuCache can cache to in-host RAM and SSD, DVX DiESL can cache to in-host SSD only. Now Datrium, on...

PernixData’s FVP vs. Virtunet – Both VMware Kernel Write Caching Software

More similar than different Both us and PernixData differentiate from rest of the host side caching vendors in similar ways - that we are kernel mode software; both of us cache writes in addition to reads; have data protection strategies in place to prevent against data loss in case of multiple simultaneous hardware failure; do not require networking or storage to be reconfigured; and do not require agents per VM or VM per host. This article is the first in a series of two articles that...

In-VMware Host Caching – Datrium’s Appliance Specific Cache Versus Virtunet’s Cache for Any Storage.

Both Datrium and us differentiate from rest of the storage appliance vendors in that both of us cache data to cache media in the VMware host instead of in the storage appliance, which is the traditional approach. Datrium calls their host side caching component DVX DiESL, and we call our software VirtuCache. The top three differences between Datrium and us are: Our host side caching accelerates any storage appliance, Datrium’s works only for their own appliance; We cache writes and...
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