Fusion-io has announced that it has acquired the UK-based storage technology company ID7, the leading developer of the open source SCSI Target Subsystem for Linux. Fusion-io specialises in acceleration technology including high performance and capacity PCIe SSD cards and is also known for employing Steve Wozniak as Chief Scientist. Mar 03, 2010 The folks at Fusion IO did mention that some clients put several of these cards in one server and use 10GbE or Infiniband mixed with iSCSI to essentially setup a mini-SAN. TIn this setup, there is no ‘hacking’ required to properly cluster your Windows server, but this is one expensive setup.

  1. Fusion-io Scsi Driver
  2. Fusion-io Scsi & Raid Devices Driver Updater
  3. Fusion-io Scsi Interface
  4. Fusion-io Scsi & Raid Devices Driver Download

By Pedro Hernandez

Fusion-io revealed today that it made another investment in software defined storage. The company announced that it acquired ID7, the UK-based company behind the open source SCST SCSI Linux target subsystem. Financial terms were not disclosed.

The companies did, however, give an indication of how the deal will impact Fusion-io's goal of mainstreaming flash storage in the data center. It's a strategy that, as of late, hinges on software as much as it does on the company's ioDrive, ioScale and ioFX flash acceleration hardware.

Last summer, Fusion-io released ION, software that in conjunction with the company's PCIe flash add-on cards turns 'tier one servers into a shared data acceleration appliance,' according to the company. The software defined storage acceleration technology can provide improvements of up to 40x in application performance, 25x for SQL Server and 8x in media transcoding.

During its unveiling, Fusion-io's influential chief scientist and Apple cofounder Steve Wozniak gave the company's pursuit of software-enhanced storage his personal stamp of approval. 'Powerful software can be the foundation for incredible innovation, especially when it's also an open system that shares resources,' he said.

As it turns out, ION helped paved the way for today's deal, said ID7 CTO and founder Mark Klarzynski.

'We had an opportunity to work with Fusion-io on the development of the ION Data Accelerator when it became apparent that the team has been founded on a culture of architecting software innovation deep within the Linux operating system kernel to deliver significant breakthroughs in modern storage architectures,' he said in press remarks.

Fusion-io followed up in late August by releasing an update for its ioTurbine software, which the company acquired when it bought up IO Turbine for $95 million in 2011. Targeted at virtualized environments, ioTurbine is a cross-platform virtual machine (VM) acceleration solution that rebalances flash storage resources in accordance to VM movement to speed up performance and lower costs by increasing the number of VMs that a server can handle.

With ID7 on board, Fusion-io CEO David Flynn is signaling that he is poised to expand on the capabilities of the company's growing software portfolio.

Fusion-io SCSI & RAID Devices Driver

'Software defined storage platforms are key to delivering peak performance and efficiency in today's datacenters. ID7 has provided valuable contributions to the industry, making us excited to welcome them to our ION Data Accelerator team as we continue to grow our business with the expertise of many of the world's most innovative engineers,' he said in a statement.

Fusion-io SCSI & RAID Devices Driver

And SCST is in no danger of taking a back seat to the company's commercial products once the ID7 team is integrated into Fusion-io, indicated Fusion-io senior vice president of products Gary Orenstein.

SCST serves as a SCSI target subsystem for the Linux operating system and is compatible with iSCSI, Fibre Channel, FCoE, SAS, InfiniBand and Wide SCSI. It enables any Linux server or appliance to provide advanced storage management capabilities like replication, thin provisioning, deduplication, high availability and automatic backups.

'In addition to maintaining an open source version of SCST, Fusion-io will continue to contribute to the open source distribution as we develop software solutions to help define the all-flash datacenter,' informed Orenstein.

Pedro Hernandez is a contributing editor at InternetNews.com, the news service of the IT Business Edge Network, the network for technology professionals. Follow him on Twitter @ecoINSITE.

This article was originally published on March 18, 2013

Main Page > Virtualization > VMware > VMware vSphere 6.7

Today, more and more workloads are running in virtual machines (VMs), including workloads that require significantly more IO in the guest operating system. In a VM on VMware vSphere, all virtual disks (VMDKs) are attached to the LSI Logical SAS SCSI Adapter in the default configuration. This adapter is recognized by all operating systems without installing additional drivers, but does not always provide the best performance, especially when an SSD RAID or NVMe Storage is used. In this article we have compared the virtual storage controllers LSI Logical SAS, VMware Paravirtual and the NVMe Controller.

Fusion-io Scsi Driver

  • 3Performance Comparison

Controller models

The standard controller in almost every VM is the LSI Logical SAS SCSI controller. This controller is recognized and supported by every guest operating system without additional drivers. It is suitable for almost any workload that does not have large I/O requirements. It is also necessary for the configuration of Microsoft Server Cluster Service (MSCS).

Starting with ESXi 4.0 and virtual hardware version 7, the VMware Paravirtual controller is available. This controller was developed for high performance storage systems, because it can handle much higher I/O and reduces the CPU load. In order for the controller to be used by the guest operating system, the VMware Tools must be installed.

Starting with ESXi 6.5 and virtual hardware version 13, an NVMe controller can also be added to the VM. This controller further optimizes the performance of SSD RAIDs, NVMe and PMEM storage. This Controller is the default Controller for Windows VMs in vSphere 7.0.

The choice of the right controller depends on the applications within the VM. For example, if it is an office VM, relatively little performance is required and the standard LSI Logical SAS SCSI controller can be used. If more storage performance is required within the VM and the storage system behind it also offers more performance, the VMware Paravirtual Controller is usually more suitable. For absolute high end performance when using an SSD RAID, NVMe or PMEM storage and very high performance requirements within the VM, the NVMe controller is the best choice.

Performance test

We have conducted various performance tests for different scenarios. The test scenarios are only examples, the individual values should be adjusted individually to the own workload to achieve realistic results. Details of the test system used:

Hardware / Software:

  • Supermicro Mainboard X11DPi-NT
  • 2x Intel Xeon Gold 5222 (3.80GHz, 4-Core, 16.5MB)
  • 256GB ECC Registered (RDIMM) DDR4 2666 RAM 4 Rank
  • 3.2 TB Samsung SSD NVMe PCI-E 3.0 (PM1725b)
  • ESXi 6.7.0 Update 2 (Build 13981272)

Test VM

  • Windows 10 Pro (18362)
  • 2 CPU sockets
  • 8 vCPUs
  • 8GB RAM
  • VMware Paravirtual
  • LSI Logical SAS
  • NVMe Controller
  • Thick-Provisioned eager-zeroed VMDK
  • LSI Logical SAS

  • VMware Paravirtual

  • NVMe Controller

Performance Comparison

Database Server

Database Server (8K Random; 70% Read; 8 Threads; 16 Outstanding IO)
IOPSMByte/sLatency (ms)CPU (%)
LSI Logical SAS78210.16611.021.63324.81
VMware Paravirtual153723.451200.960,83231.27
NVMe Controller203612.541590.720,62848.03
Fusion-io SCSI & RAID Devices Driver


Fusion-io Scsi & Raid Devices Driver Updater

E-Mail-Server (4K Random; 60% Read; 8 Threads; 16 Outstanding IO)
IOPSMByte/sLatency (ms)CPU (%)
LSI Logical SAS83403.47325,791.50623.52
VMware Paravirtual157624.97615.720,81131.46
NVMe Controller236622.59924.310,54052.11


File-Server (64K Sequential; 90% Read; 8 Threads; 16 Outstanding IO)
IOPSMByte/sLatency (ms)CPU (%)
LSI Logical SAS44739.432796.212.86012.29
VMware Paravirtual53717.263357.332.38216.87
NVMe Controller48929.053058.072.61514.14

Fusion-io Scsi Interface


Streaming Server (5120K Random; 80% Read; 8 Threads; 16 Outstanding IO)
IOPSMByte/sLatency (ms)CPU (%)
LSI Logical SAS458.162290.81279.6072.18
VMware Paravirtual504.222521.10253.94912.26
NVMe Controller505.142525.68253.6591.56


VDI-Workload (4K Random; 20% Read; 8 Threads; 8 Outstanding IO)
IOPSMByte/sLatency (ms)CPU (%)
LSI Logical SAS140155.89547.480,45635.69
VMware Paravirtual163073.26637.000,39237,98
NVMe Controller203464.89794.780.31449.55

Author: Sebastian Köbke

RAID Controller Management and monitoring on VMware vSphere

Fusion-io Scsi & Raid Devices Driver Download

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