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Channel: Colocation to Virtualization » Filesystems
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VMWare: ESX Server Partitioning

I have had a few servers core dump and drop over 5 gigs of data to /var/core.  Before, per “best practices” a vendor recommended around 4 gigs for /var.  I upped that to 6 gigs originally, but after 2...

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Linux, Unix, NAS, File Systems: Inodes (Part 1) – Checking Availability And...

Inodes really tell you how many file handles (files) that can be created on a file system. Most people will never exceed the default setting when the file system is created, nor even know that one is...

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Linux/Unix/File Systems: Inodes (Part 2) – File Level Inode Information And...

Inodes “Part 1″ went into locating filesystem level inode information. Here we will move from the main filesystem to the individual file. Besides reviewing how the inode record reflects permissions...

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DataDomain/NAS/Filesystems/Linux: Remove Files From A DataDomain’s /ddvar

A few days ago we received alerts for the /ddvar fileystem from one of our Data Domain units. Normally, I would not manually remove any files from this filesystem due to it being mainly used by the...

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SAN/Networking/Linux: Using Multipath To Verify and Troubleshoot Connectivity...

A few days ago there was in error on one of our Cisco MDS 9120 fiber switches. The current environment at this datacenter consists of two Cisco MDS 9120 SAN switches with servers redundantly connected...

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VMWare: vSphere / ESX 4 Server Partitioning

This will review the partitioning scheme that I am currently using for VMware vSphere (ESX 4). For information concerning partitioning for VMware ESX 3.x, please refer to the following link:...

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Linux / Storage: Memory – Huge Pages Overview

A page is really virtual memory which is managed by the Translation Lookaside Buffers(TLB) in the CPU. The TLB controls the mapping of the virtual memory pages to physical memory addresses. In doing...

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Linux, Filesystem: GNOME Virtual File System (GVFS) Remote Connectivity CLI

When not using NFS, Linux administrators generally move files from one server to the next via SFTP or FTP. This can sometimes be a headache when needing to move large amounts of files between the...

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Storage, SAN, Linux: EMC PowerPath Configuration On Cisco UCS

The following is a walk through of installing EMC PowerPath software on RedHat based Linux hosts (CentOS/Fedora). This is required to fully utilize multiple paths to EMC SANs. The test server used here...

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