Category: Server Virtualization

VMware vSphere, Microsoft Hyper-V, Citrix Xen Server, Oracle VM Server, Red Hat KVM.

2

The ramdisk ‘tmp’ is full – VMware ESXi on HPE ProLiant

We are using HPE ProLiant servers in our virtual environment to delivering different services to our customers. VMware ESXi has been installed on all servers as Hypervisor. You know that each vendor has customized image that includes VMware ESXi, drivers and management tools. It seems, there is an issue on HPE Agentless Management (AMS) on latest ESXi image.

Windocks 0

What’s WinDocks?

Windocks combines Docker Windows containers with SQL Server database cloning, for a modern, open data delivery solution.Enterprises modernize application development, testing, reporting, and BI, with existing licenses and infrastructure, at a fraction of the cost of alternatives.

Qemu 0

QEMU version 4.0.0 Released

QEMU (short for Quick Emulator) is a free and open-source emulator that performs hardware virtualization. QEMU is a hosted virtual machine monitor: it emulates the machine’s processor through dynamic binary translation and provides a set of different hardware and device models for the machine, enabling it to run a variety of guest operating systems.

2

Is There Any Tools Like VMware Tools for KVM?

All VMware guys know that guest OS needs drivers for
paravirtualized devices and the drivers provided by VMware as a package which called VMware Tools. VMware Tools is available for supported operating systems and also there is an open-source which called Open-VM-Tools and it’s available for modern Linux distributions and installed by operating system installer.

1

End of General Support for vSphere 6.0

If you are using vSphere 5.5 on your environment, please don’t read this post otherwise it will be useful for you. Currently, vSphere is most popular server virtualization software and any changes or notifications which published by VMware, has impact on may organizations IT infrastructure. What’s the newest? Answer: Say good bye to vSphere 6.0 .

0

What’s SDS (Software-Defined Storage) – Part 2 (Ceph)

Whether you want to provide Ceph Object Storage and/or Ceph Block Device services to Cloud Platforms, deploy a Ceph Filesystem or use Ceph for another purpose, all Ceph Storage Cluster deployments begin with setting up each Ceph Node, your network, and the Ceph Storage Cluster. A Ceph Storage Cluster requires at least one Ceph Monitor, Ceph Manager, and Ceph OSD (Object Storage Daemon). The Ceph Metadata Server is also required when running Ceph Filesystem clients.

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.

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.

0

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

Subscribe to our newsletter and join other subscribers

Holler Box