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How To Enable SSH on VMware ESXi 5 / 5.5 / 6 & All Other Versions

Many necessary administrative functions on ESXi requires SSH access. For example, offline bundles, third party management utilities, backup utilities, and many other tasks require you to log in to the ESXi console, via SSH or physically. This post will guide you through the process of enabling the SSH service, and opening up the firewall to allow access. This process works on all versions of ESXi, including the newer versions such as 5, 5.5, and 6. Lets get started.

Enabling SSH on an ESXi host

There are two steps involved in getting SSH access set up on an ESXi host.

  • Enabling the SSH service
  • Opening port 22 (SSH port) on the firewall

First, log into the VMware vSphere Client. You can login directory to the host, or to a vSphere server, it doesn’t matter. Select the host in the left panel, then navigate to Configuration > Security Profile, once you are there, click on the Properties option to the right of Services.

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Now, select SSH, then Options.

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How To Enable Data Deduplication In Windows Server 2012 On An Existing Volume

I have a very large RAID 6 array that is used to store movies, tv shows, personal files, and various other things. It’s formatted capacity is about 36TB. Believe it or not, it’s pretty much full. It currently consists of 20x2TB hard drives and I really don’t want to add any more drives to it in its current form. Later this year I’m planning on building a new array to replace it, using fewer 6TB or 8TB drives. The server that manages the array had Server 2008R2 installed. After getting down to the last few gigs of free space it dawned on me, why not install Server 2012 R2 and set up data deduplication. I’ve read some pretty impressive articles online, where people were able to reclaim up to 60% of their storage using the dedup mechanism in Server 2012. So, I went ahead and upgraded. I started poking around and it wasn’t very obvious enabling dedup, so I put this guide together to help you get started.

Enabling Deduplication in Server 2012 R2

First, we need to install the Data Deduplication service. It’s part of File and Storage Services. Open Server Manager, select Local Server in the left side pane, then go to the Add Roles and Features wizard, under Manage.

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Go through the first few windows, and when you get to Server Roles, you need to make sure Data Deduplication is selected, at minimum, under File and Storage Services. This is also a good opportunity to install any other roles or services you might be interested in.

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Problems enabling server side encryption on ownCloud 8

When enabling encryption on an ownCloud 8 installation and the user already has files in account, those files will be encrypted on the first login.  A message will display saying “Initial encryption started.  This can take a while…. Please wait.”  If, for some reason the account gets stuck in this mode, it is because the migration_status value for the users account has been set to -1, instead of 1.  When all the files have been encrypted, this value is set to 1.  When set to 0, the initial encryption runs.  To update this value, log into mysql and perform the following steps:

#mysql -u root -p

use owncloud

SELECT * FROM oc_preferences WHERE configkey="migration_status";

(the command just entered will show the migration_status value for all accounts)

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