17Apr 2019 by Ceyhun Kirmizitas No Comments
Installing Zimbra 8.0.4 on CentOS 6.4 X64 – RHEL 6.4

Installing Zimbra 8.0.4 on CentOS 6.4 X64 – RHEL 6.4

Video Tutorials, Zimbra
Zimbra Collaboration Suite (ZCS) is a groupware product created by Zimbra. It is widely used in the world. Users can share folders, contacts, schedules and other things, using a very rich web interface. In this tutorial, I will explain installing Zimbra Collaboration Server 8.0.4 - Open Source Edition on CentOS 6.4 X64 or RHEL 6.4 Installation Steps 1. yum update - Update your system 2. Install prerequisites yum install sudo sysstat libidn gmp libtool-ltdl compat-glib vixie-cron nc perl libstdc++.i686 3. Modify /etc/hosts file and Also, be sure to setup a DNS MX record in your zone file 127.0.0.1 localhost localhost.localdomain #::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.0.20 centos01.linuxlab.local centos01 4. Disable start-up services 4a. chkconfig postfix off 4b. service postfix stop 4c. chkconfig sendmail off 4d. service sendmail stop 5. /etc/sudoers…
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16Apr 2019 by Ceyhun Kirmizitas No Comments
Introducing VMFS 5: What you need to know in a nutshell – vSphere 5

Introducing VMFS 5: What you need to know in a nutshell – vSphere 5

VMware
It?s new, and it?s good :) VMFS-5 increases limits (without increasing extents) to 64TB. It enables 2TB+ RDMs. It uses a common allocation size of 1MB. It increases the small block allocations available for total use. It is a dependency for SCSI UNMAP It uses the VAAI HW accelerated locking more extensively. Be aware: While it can non-disruptively be upgraded from VMFS-3 to VMFS-5 - if it were my environment - I would tend to create new datastores and svmotion.
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16Apr 2019 by Ceyhun Kirmizitas No Comments
How to Deploy Windows Server 2008 Read Only Domain Controller (RODC)

How to Deploy Windows Server 2008 Read Only Domain Controller (RODC)

Video Tutorials, Windows Server
Read-Only Domain Controller (RODC) is an additional domain controller for a domain that hosts read-only partitions of the Active Directory database. An RODC is designed primarily to be deployed in a branch office environment. Branch offices typically have relatively few users, poor physical security, relatively poor network bandwidth to a hub site, and little local IT knowledge. RODC is primarily aimed at providing additional security on an Active Directory Database for a server that is not physically secured. In this video we'll deploy Windows Server 2008 Read Only Domain Controller (RODC).
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15Apr 2019 by Ceyhun Kirmizitas No Comments

How to Install VMware Tools on Red Hat Enterprise Linux 6.4 (RHEL 6.4)

Linux, Video Tutorials
VMware Tools is an optional, free set of drivers and utilities that enhances both the performance of a virtual machine’s guest operating system and interaction between the guest and the host. From time to time I find clients have not installed the VMware tools in their virtual machine’s (VM) operating system. I find it more often in Linux VMs than Windows. Installing VMware Tools in the guest operating system is vital. Although the guest operating system can run without VMware Tools, you lose important functionality and convenience. Related Video:  https://www.youtube.com/watch?v=VBqGLcxHjZ8&t=44s
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15Apr 2019 by Ceyhun Kirmizitas No Comments
How to Install VMware Tools in CentOS 6.4

How to Install VMware Tools in CentOS 6.4

Linux, Video Tutorials, Workstation
VMware Tools is an optional, free set of drivers and utilities that enhances both the performance of a virtual machine’s guest operating system and interaction between the guest and the host. From time to time I find clients have not installed the VMware tools in their virtual machine’s (VM) operating system. Although the guest operating system can run without VMware Tools, you lose important functionality and convenience. Related Video:  https://www.youtube.com/watch?v=pO7iZbuTYJU
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14Apr 2019 by Ceyhun Kirmizitas No Comments
Installing VMware vCenter Server 5.1 Update 1 on Windows Server 2012

Installing VMware vCenter Server 5.1 Update 1 on Windows Server 2012

Video Tutorials, vSphere
VMware released the new version of vCenter server which is 5.1 update 1, with new improvements and features. Such as:  vCenter Server is now supported on Windows Server 2012 Additional vCenter Server Database Support: vCenter Server now supports the following databases. Microsoft SQL Server 2012 Microsoft SQL Server 2008 R2 SP2 vCenter Essentials no longer enforces vRAM usage limit of 192 GB vCenter 5.1 Requirements VMware recommends 10GB of RAM if you are planning to install all components on a single server (which is what the simple install does). 64-bit dual logical CPU cores have been required since vSphere 4.1, so no change here. You will also need at least 40-60GB of free disk space after installation (100GB recommended). vCenter Server supports IBM DB2, Oracle, and Microsoft SQL Server databases.…
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14Apr 2019 by Ceyhun Kirmizitas No Comments
Installing CentOS 6.4 in VMware Workstation 9.0.2

Installing CentOS 6.4 in VMware Workstation 9.0.2

Linux, Video Tutorials, Workstation
What is CentOS? CentOS, which stands for the Community Enterprise Operating System, is a distribution of the Linux operating system based on Red Hat Enterprise Linux (RHEL). It is currently the most popular Linux distribution for web servers. CentOS uses the Red Hat source code base to create a product similar to RHEL. Unlike RHEL however, CentOS does not require a paid subscription. In January 2014, Red Hat announced that it would sponsor the CentOS project. As the result of these changes, ownership of CentOS trademarks was transferred to Red Hat. Related Video:  https://www.youtube.com/watch?v=pO7iZbuTYJU
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13Apr 2019 by Ceyhun Kirmizitas No Comments
Moved Mailboxes Are Shown in Disconnected Mailbox – Exchange 2010 SP1 SP2 SP3

Moved Mailboxes Are Shown in Disconnected Mailbox – Exchange 2010 SP1 SP2 SP3

Exchange Server
You have just moved some mailboxes from one Exchange 2010 SP1 ( or later ) mailbox database to another mailbox database but all the moved mailboxes are shown in disconnected mailboxes. This happens because of the "Soft Deleted mailboxes". Exchange doesn?t fully delete the mailbox from the source database immediately after completion of the move. Instead, the mailbox in the source mailbox database is switched to a soft-deleted state. The soft-deleted mailboxes are retained in the source database until either the deleted mailbox retention period expires or you use the Remove-StoreMailbox cmdlet to purge the mailbox.   You can see soft-deleted mailbox by running the following shell command Get-MailboxStatistics ?Database ?Mailbox Database Name? | Where-Object {$_.DisconnectReason ?eq ?Softdeleted?} You can delete all soft deleted mailboxes from a particular Mailbox Database by…
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13Apr 2019 by Ceyhun Kirmizitas No Comments
Managing Partitions in RHEL 6.x – CentOS 6.x

Managing Partitions in RHEL 6.x – CentOS 6.x

Red Hat - CentOS - Fedora
The fdisk command is a text-based utility for viewing and managing hard disk partitions on Linux. It’s one of the most powerful tools you can use to manage partitions, but it’s confusing to new users. Using fdisk you can create a new partition, delete an existing partition, or change existing partition. Using fidsk you are allowed to create a maximum of four primary partition, and any number of logical partitions, based on the size of the disk. This video tutorial will go through the basics of using fdisk to manage a partition table. After using fdisk, we will have see how to use a mkfs command to format new partitions with a file system. Tasks: 1. Identify current storage configuration fdisk -l 2. Provision 1 or more usable partitions parted…
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12Apr 2019 by Ceyhun Kirmizitas No Comments

How to Install VMware vCenter Server 5.1 Update 1 on Windows Server 2008 R2 SP1

Video Tutorials, vSphere
VMware released the new version of vCenter server which is 5.1 update 1, with new improvements and features. Such as: vCenter Server is now supported on Windows Server 2012 Additional vCenter Server Database Support: vCenter Server now supports the following databases. Microsoft SQL Server 2012 Microsoft SQL Server 2008 R2 SP2 vCenter Essentials no longer enforces vRAM usage limit of 192 GB vCenter 5.1 Requirements VMware recommends 10GB of RAM if you are planning to install all components on a single server (which is what the simple install does). 64-bit dual logical CPU cores have been required since vSphere 4.1, so no change here. You will also need at least 40-60GB of free disk space after installation (100GB recommended). vCenter Server supports IBM DB2, Oracle, and Microsoft SQL Server databases.…
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