Author: Davoud Teimouri

Daylight Saving 1

Iran Daylight Saving on March 2023

The government of Iran has announced that daylight savings will not be observed from March 2023. But apparently, this issue has not been properly coordinated with international institutions. So this was cause of many issues on public services in Iran. We did some updates and configuration changes before 22nd March 2022 and I want to share the story with you.

VM ID Improved Storage Usage and Performance 0

Virtual Machine Identification (VM-ID) in Fibre Channel: A Comprehensive Overview

Virtual Machine Identification (VMID or VM-ID) is a technology for tracking virtual machine I/O between virtual machine and SAN target. VM-ID can be used by hypervisor and FC switch to trace generated I/O by specific VM. As result, we can optimize whole SAN area for VI workload and non-VI workloads would be achieved.

Kata Containers 2

Kata Containers, Container with VM Isolation

Kata Containers offers method of container deployment with more security. Security is one biggest challenge about containers and containers has lower level of security compared to virtual machines. Because virtual machines are isolated from each other, but containers can’t provide isolation same as virtual machines.

Control My Update 0

Control My Update: Free Tool for Update Control

Large or small environments have same challenges about updating operating system and the challenges are about automation, reporting and notifying end-users or administrators. Control My Update is a fling which written by VMware engineers to have more control about Windows updates.

Database Backup 3

Optimizing Data Protection: Unleashing the Power of Database Backup Best Practices in Virtualization Platforms

Virtualization platforms such as VMware vSphere or Linux KVM supporting large scale of virtual machines now. Even, virtualization platforms can host monster virtual machines as database server. At this post, we’ll review database backup solutions in virtualization platforms about advantages and disadvantages.

LPAR2RRD 0

New Release – STOR2RRD & LPAR2RRD (7.50)

I’ve published many articles about STOR2RRD and LPAR2RRD monitoring software for monitoring servers, OS, storage, SAN, LAN and other devices. XORUX has released new version of the monitoring suites with new features and capabilities. Let’s review the new features, capabilities and changes.

Measure Network Latency QPerf Linux 0

Network Latency: Best Tools for Measuring

Enterprise businesses such as banking business using latency sensitive applications. Most of application delay issues are related to network infrastructure. Also most of application server are Linux servers. How can we measure network latency on Linux?

FC Port Aggregation (Trunking) 0

Fibre Channel Trunking (Aggregation): Better Performance, Higher Bandwidth (>1 Tb/s)

We are all knowing LACP on ethernet network but Fibre Channel and SAN network providing multipathing I/O by using logical and physical paths as single device on operating system and also using path selecting policies for using I/O paths optimized. But if server using 16Gb/s FC HBA, so there is no bandwidth aggregation. Server can generate bandwidth for each port up to maximum speed of port and also path selecting has performance impact of server when large paths are presented to server. Months before, I was thinking about FC port aggregation and did many searches but I didn’t find anything until now.

Firecracker 1

MicroVM and Firecracker: Discover Advantages and Disadvantages

During virtualization revolution, physical servers replaced with virtual machines to run multiple different workloads on a single server hardware but virtual machines were still large and needs some resources to run as isolated servers. Virtual machines needs to have their own operating system and applications. Also they needs to manage and configure separately. MicroVM or Micro Virtual Machine offering benefits of two different technologies and Firecracker will help you to implementing MicroVM.

Oracle Linux Manager 1

Oracle Linux Manager 2.x, Free Linux Management

I am really fan of what is doing Oracle for Oracle Linux and offering open-source solutions with free update. Oracle Linux Manager is one of free and open-source solutions that Oracle provides for Oracle Linux by developing new enterprise solution from open-source solutions.