vSphere 5.5 Documentation Center. Storage technologies for ESXi. ESXi hosts support host-level storage virtualization, which logically abstracts the physical storage layer from virtual machines.
The following storage technologies are supported by ESXi: 1. Direct-attached storage – internal hard disks or external storage systems attached to the ESXi host through a direct connection using procotols such as SAS or SATA. This type of storage does not require a storage network to communicate with your host, but prevents you from using vSphere features that require shared storage, such as High Availability and vMotion. 2. 3. 4. 5.
Virtual machines use virtual disks to store their operating system, program files, and other data. Vsphere esxi vcenter server 60 storage guide. VMware To Complete Storage Virtualization With VVols. VMware launched its Virtual SAN (VSAN) hyperconverged storage for its vSphere virtualized servers last fall and started shipping it this spring and has seen very good uptake of the technology, with 12,000 beta tests through the spring and more than 300 customers in production in the first three months of commercial availability.
But that is not the end of the virtual storage story at VMware. The next release of the hypervisor will include a feature called Virtual Volumes, or VVols for short, and this type of storage virtualization will be employed across all kinds of devices to virtualize the data plane between virtual machines and physical storage devices. In a way, VSAN offers a kind of preview of the VVols technology. VMware launches virtual SAN software. VMware has introduced software designed to make it much easier for its customers to store large numbers of virtual machines (VMs) created with the company’s software.
“It is about management simplification,” said Alberto Farronato, VMware director of product marketing for storage and availability. The software, VMware Virtual SAN (vSAN), is the company’s first foray into storage virtualization. The company made its name offering server virtualization and is also ramping up offerings for desktop and network virtualization as well. The software provides storage space for the virtual disks (VDs) that hold the data needed to run VMs. The vSAN software is built directly into the kernel of VMware vSphere, the company’s virtualization OS. For users of vSphere, the software pools together internal storage, either hard drives or solid state drives (SSDs), on x86 servers, which then can be used to store VDs. Review: VMware Virtual SAN turns storage inside-out.
Convergence of compute and storage is all the rage in the virtualization market these days.
You see it in Microsoft's Windows Server 2012 R2 with Hyper-V and Storage Spaces. You see it in third-party platforms such as Nutanix. And you see it in VMware's vSphere flagship with the addition of Virtual SAN, a new capability built into the ESXi hypervisor that turns the direct-attached storage in vSphere cluster nodes into highly available, high-performance shared storage. The goals behind Virtual SAN, or VSAN, are both to lower overall storage costs and to eliminate the I/O latencies associated with networked storage.
VSAN achieves high availability by replicating storage objects (virtual machine disks, snapshot images, VM swap disks) across the cluster, allowing admins to specify the number of failures (nodes, drives, or network) to be tolerated on a per-VM basis. . [ Virtualization showdown: Microsoft Hyper-V 2012 vs. Software-Defined Shared Storage Features: VMware Virtual SAN. Advantages of network virtualization impress, but hurdles remain. Server virtualization transformed IT operations, and now data centers are facing another transformative technology as more of the network is virtualized.
With the introduction of network functions virtualization, a single physical host can house a multi-tier application without traffic ever traversing a physical network. Network functions virtualization (NFV) enables the virtualization of a network device or function, and in turn allows the user to profit from the many advantages of network virtualization. The foundation of NFV is the virtual switch, which is as old as server virtualization, and, in its most basic form, provides Layer 2 connectivity between VMs on a single host.
Over the years, virtualization vendors have added capabilities to virtual switches. From a logical perspective, virtual switches provide much of the same functionality as the traditional top-of-rack switches. The introduction of NFV takes network virtualization to another level. Physical and virtual networking. The key virtual networking components in virtual architecture are virtual Ethernet adapters and virtual switches.
A virtual machine can be configured with one or more virtual Ethernet adapters. A virtual switch enables virtual machines on the same ESXi host to communicate with each other using the same protocols used over physical switches, without the need for additional hardware. VMware technology lets you link local virtual machines to each other and to the external network through a virtual switch. A virtual switch, just like any physical Ethernet switch, forwards frames at the data link layer.
An ESXi host can contain multiple virtual switches. Virtual switches are similar to modern physical Ethernet switches in many ways. Virtual switches also support VLAN segmentation at the port level, so that each port can be configured as an access or trunk port, providing access to either single or multiple VLANs. vSphere Virtual Networking. Distributed switches explained. A distributed switch functions as a single virtual switch accross all associated ESXi hosts and allows virtual machines to maintain consistent network configuration as they migrate across multiple hosts.
Just like standard switches, distributed switches forward frames at layer 2, support VLANs, NIC teaming, outbound traffic shaping, etc. Vmw nsx network virtualization design guide. The Network Virtualization Blog. The VMware NSX network virtualization platform allows us to build sophisticated networking and security constructs in software.
NSX has a rich RESTful API which allows one to build highly flexible and automated environments. In this blog, we’re going to focus on operations and automation; we’ll demonstrate one example of automation around security policies/rules that can be done with NSX. VMware NSX allows for micro-segmentation with a distributed firewall service (DFW). The DFW is a kernel-level module and allows for enhanced segmentation and security across a virtualized environment.
One of the common questions we get asked is, “how do I decide what rules to build?” We’ll demonstrate how the VMware NSX DFW can be monitored with the popular Splunk platform. Some vendors have recently claimed they can achieve micro-segmentation at data center scale while maintaining a hardware architecture. Network security, for a long time, has worked off of the old Russian maxim, “trust but verify.” Network Virtualization vs. Server Virtualization. How is network virtualization similar to server virtualization?
Well, for one thing they’re very similar conceptually. Virtual Networking 101: Understanding VMware Networking. May 30, 2012By Petra Jorgenson On a basic, structural level, virtual networks in VMware aren’t that different from physical networks; vSphere is designed to mimic the functions of a physical network, so a lot of the network hardware you’ll find in the real world, you’ll find virtualized in VMware.
The Virtues of Network Virtualization. Security. IT automation. Application continuity. What do these three things have in common? VMware NSX: 3 different use cases. Network virtualization continues to play a key role on the journey to the data center of the future. As concepts such as the software-defined data center (SDDC) and hyperconvergence take hold, they are driven, in part, by network virtualization technology. While there is a growing throng of network virtualization providers, VMware's NSX continually stands out as one of the most popular options. At the 2015 VMworld conference, the company announced that it had more than 700 NSX customers, with a few of them spending more than $1 million a piece on the product.