Davoud Teimouri - Virtualization and Data Center

Author: Davoud Teimouri

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Data Center / Data Storage / Operating System / Reviews

I/O Block Size Best Practice on EMC All Flash/Hybrid Flash Array and Linux (Physical And Virtual)

We have a problem on our Oracle Database servers which are hosting by Oracle Linux servers, when Oracle Databases putting to Maximum Availability protection mode, some workloads impacts performance whole database ecosystem. The workloads are related to some tasks which performed from by application servers and the tasks needs huge read/write I/O on storage arrays. We are using DELL EMC Unity/Unity XT (All Flash/Hybrid Flash) family in most of projects. I did lots of searches and found nothing at first step. I had only one clue, I/O block size was very large during performing tasks by database servers.

PSWindowsUpdate 0

Operating System / Reviews

Download and Install Windows Updates Remotely via PSWindowsUpdate PowerShell Module

Operating system is the core of any system and we have to keep operating system update cause of preventing performance issues, unplanned downtime and fix security vulnerabilities. Windows (client and servers) has a standard terminology for receiving updates monthly and most of organizations using Windows Server Update Services to applying updates of multiple servers/client. Updates would be downloaded and installed on multiple servers/clients automatically but service downtime is always the biggest concern but another concern is installing updates on multiple machines and rebooting systems during planned downtime. PowerShell and WinRM would help us when they come as PSWindowsUpdate PowerShell module!

Oracle Database 0

Data Center / Reviews

Oracle Database CPU Core Limit For Dummies

When you have no right sizing, when you have no control what be happened on database and when you didn’t any optimization, limiting using resources by database or any other system will necessary to help server to keep working without hang. Oracle Database be able to use all processing resources on a server and other process will be dead or hang if they couldn’t receive enough time for processing. CPU is the most important component and resource on any computer system, so if you want to stable system then the needed resources should be measured by right sizing or limiting some processes to delivering minimal resources to other processes.

Dell EMC Unity XT 0

Data Storage / News

Major Update For DELL EMC Unity/Unity XT OE (5.2.0.0.5.173)

EMC has released new OE (5.2.0.0.5.173) for Unity/Unity XT storage array family with new major changes. The new release also contains lots of resolved issues for different components. The biggest changes are “Data Reduction and Advanced Deduplication” can now be enabled for hybrid storage pools and also dynamic pools will be expanded faster than before.

NFS (Network File System)) 0

How To

NFS Client Configuration For My Dummy Colleagues

NFS (Network File System) is the most popular file sharing for Linux systems to access files from remote client. NFS can be very troublesome because of misconfiguration. The most challenges with NFS is network interruption and connection problem between client and server.

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Data Center / Data Storage / Reviews

Parallel NFS (pNFS) – Part 1 (Introduction)

Parallel NFS (pNFS) is a part of the NFS v4.1 standard that allows compute clients to access storage devices directly and in parallel. The pNFS architecture eliminates the scalability and performance issues associated with NFS servers deployed today. This is achieved by the separation of data and metadata, and moving the metadata server out of the data path.

VMware OS Optimization Tool 0

Desktop Virtualization

Windows OS Optimization Tool for VMware Horizon

Windows OS Optimization Tools was a VMware’s Fling and this free tool has been productized now. Windows “OS Optimization Tool For VMware Horizon” will be official Horizon’s components from VMware Horizon 2111. What’s Windows OS Optimization Tool for VMware Horizon? The Windows OS Optimization Tool for Horizon makes it easy to apply configuration settings to desktops and servers. It includes settings to optimize the following Windows operating systems for both desktops and servers that reside in the data center and in the cloud: Windows 11 Windows 10 Windows Server 2022 Windows Server 2019 The Windows OS Optimization Tool for Horizon...