Category: Virtualization

Veeam Availability Suite Update 4 0

Veeam ONE 9.5 Update 4

Veeam has released update for Veeam ONE 9.5. The new update came with new features and improvements. Veeam ONE 9.5 update 4 is available for download from January 22, 2019 on Veeam website.

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New ESXi 6.7 Patch Released (ESXi670-201901001)

VMware has released patch for ESXi 6.7 (ESXi670-201901001) to resolving some important issues, all the resolved issues are bug fix and this patch doesn’t include any security fix . As you may know, ESXi patches are cumulative and new patches includes all resolved issues that released before the new patch.

Virtual Desktop Infrastructure 5

Recommended Settings on Windows 10 for VDI

Windows is still most popular operating system for clients in over the world. Windows is installed on more than 80% of all desktop and laptops. So our users are addicted to Windows. I have real experience about our customers with other operating systems. Actually, most people is born in a home with Windows desktops or Windows laptops. They have grown up with Microsoft Outlook and other Windows application, so they can’t work with other operating systems.

Corruption in dlmalloc 1

ESXi Fails with “Corruption in dlmalloc” on HPE Server

“Corruption in dlmalloc” issue occurs because multiple esxcfg-dumppart threads attempt to free memory which has been used for configuring the dump partition. Thread A checks if there are entries to be freed and proceeds to free them, while within the same time frame, Thread B is also attempting to free the same entries.
Based on VMware KB2147888, this issue is resolved on ESXi 6 U3. But why issue is happening on ESXi 6 U3 or ESXi 6.5 U1 when they are installed on HPE ProLiant servers?

Nakivo Universal Object Recovery 0

NAKIVO Backup & Replication v8.1

There is no need to introduce Nakivo for my reader at begin of each post. Nakivo is one of leaders in backup & replication market now. I writing reviews about Nakivo Backup & Replication since version 6.x. All new version had new amazing and useful features. Nakivo Backup & Replication v8.1 comes with two new features as well. In addition of new features, Nakivo Backup & Replication v8.1 has come with lot of improvement and fixes. Let’s review new features, improvements and fixes.

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How to Export Big Virtual Machine as OVA or OVF

I guess, you know the instruction but let’s quick review. You can export virtual machines via some different tools such as vSphere Client, vSphere Web Client and others. All administrators do it today and familiar with OVA and OVF. It’s possible to export small virtual machines via vSphere Client, vSphere Web Client, PowerCLI. If you want to export virtual machine with 200~300 GB virtual disks (Thin or Thick), there is serious problem, just make sure that you have enough free space. But did you try to export big or monster VM as OVA or OVF?

Linux Container 0

Operating System Level Virtualization (Part 2) – Implementations Comparison

These days, everyone knows what’s Cloud Computing and cloud based services are using for speedup deployment of organizations services. Operating System Level Virtualization or Containers helping system architectures and administrators to achieve the goals. There are many implementations for containers that today, those methods are compatible with different hardware architectures and operating system.

You may know that Unix has OS Level Virtualization from past years and this technology is very older than other virtualization such as Full Virtualization or Paravirtulization.

Full Virtualization (VMware ESXi, Hyper-V) and Paravirtualization (Xen, UML) provides different guest OS but there is no way to use different guest OS when you are using containers. Of curse, some solutions are under development.

iSCSI vs Fiber Channel 0

Guest Connected vs RAW Device Mapping (RDM)

RAW Device Mapping (RDM) is one of oldest VMware vSphere features which introduced to resolving some limitation on virtualized environments such as virtual disks size limitation and deploying services top of fail-over clustering services.

You can use a raw device mapping (RDM) to store virtual machine data directly on a SAN LUN, instead of storing it in a virtual disk file. You can add an RDM disk to an existing virtual machine, or you can add the disk when you customize the virtual machine hardware during the virtual machine creation process.

Provisioning Types Comparison 0

VMDK Write Performance on Different Provisioning Types

VMDK (Virtual Machine Disk) has been designed to mimic the operation of physical disk. Virtual disks are stored as one or more VMDK files on the host computer or remote storage device, and appear to the guest operating system as standard disk drives.

VMware supports three provisioning types:

Thin Provisioned
Thick Provisioned
Eager-zeroed Thick Provisioned

Remote Direct Memory Access 1

[Review]: What’s Remote Direct Memory Access(RDMA)?

Remote Direct Memory Access (RDMA) provides direct memory access from the memory of one host (storage or compute) to the memory of another host without involving the remote Operating System and CPU, boosting network and host performance with lower latency, lower CPU load and higher bandwidth. In contrast, TCP/IP communications typically require copy operations, which add latency and consume significant CPU and memory resources.

Oracle Secure Global Desktop 0

[Review]: Oracle Secure Global Desktop

Oracle Secure Global Desktop is a secure remote access solution for any cloud-hosted enterprise application and hosted desktops running on Microsoft Windows, Linux, Oracle Solaris and mainframe servers. Oracle Secure Global Desktop works with a wide range of popular client devices, including Windows PCs, Macs, Linux PCs, Chromebook and tablets such as the Apple iPad and Android-based devices.

Illustration of RecoverPoint for VMs protecting VMware VMs 0

[Review]: Dell EMC RecoverPoint for Virtual Machines

RecoverPoint for VMs is a virtualized solution that provides data replication, protection, and recovery within the VMware vSphere environment.

Enable quick recovery of VMware virtual machines to any point in time. Dell EMC RecoverPoint for Virtual Machines provides continuous data protection (CDP) for operational recovery and disaster recovery. You’ll manage your VM protection simply and efficiently.

VMware vSphere APIs for I/O Filtering (VAIO) 0

[Review]: VMware vSphere APIs for I/O Filtering (VAIO)

This is not a new features on last vSphere version but I went to write a post about that. We had to deploy different replication scenarios for our customers and some customers needs Point-In-Time Recovery (PiT) and The PiT solutions using VAIO actually so learning about the API is necessary for administrators.

The vSphere APIs for I/O Filtering (VAIO) were introduced in vSphere 6.0 Update 1. The VAIO framework and program were developed to provide VMware and partners the ability to insert filters for I/O into the data path of virtual machines. These “I/O Filters” enable VMware, and partners, to intercept and manipulate the I/O. This manipulation can provide open-ended data services, but thus far is limited to four use cases, two of which are currently exclusive to VMware and two which are open for partners. These use cases are: Replication, Caching, Quality of service (VMware only), Encryption (VMware only).

vCenter 6.5 Update 2 0

[Review]: vSphere 6.5 Update 2

Today, VMware has announced vSphere 6.5 U2 with lot of new features and fixes on components specially on ESXi and vCenter. vSphere 6.5 U2 has some new features that backported from vSphere 6.7 . VMware recommended upgrading vSphere 5.5 to vSphere 6, 6.5, so vSphere 6.5 U2 is good choice for upgrade virtual infrastructure with less impact, because many hardware that supporting vSphere 5.5, don’t compatible with vSphere 6.7 . Upgrading to vSphere 6.5 Update 2 from vSphere 5.5 requires a minimum version of vSphere 5.5 Update 3b prior to performing the upgrade.

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