Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com
Answertopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.

1.9. Expect the Unexpected

While the phrase "expect the unexpected" is trite, it reflects an underlying truth that all system administrators must understand:

There will be times when you are caught off-guard.

After becoming comfortable with this uncomfortable fact of life, what can a concerned system administrator do? The answer lies in flexibility; by performing your job in such a way as to give you (and your users) the most options possible. Take, for example, the issue of disk space. Given that never having sufficient disk space seems to be as much a physical law as the law of gravity, it is reasonable to assume that at some point you will be confronted with a desperate need for additional disk space right now.

What would a system administrator who expects the unexpected do in this case? Perhaps it is possible to keep a few disk drives sitting on the shelf as spares in case of hardware problems[1]. A spare of this type could be quickly deployed[2] on a temporary basis to address the short-term need for disk space, giving time to more permanently resolve the issue (by following the standard procedure for procuring additional disk drives, for example).

By trying to anticipate problems before they occur, you will be in a position to respond more quickly and effectively than if you let yourself be surprised.

Notes

[1]

And of course a system administrator that expects the unexpected would naturally use RAID (or related technologies) to lessen the impact of a critical disk drive failing during production.

[2]

Again, system administrators that think ahead configure their systems to make it as easy as possible to quickly add a new disk drive to the system.

 
 
  Published under the terms of the GNU General Public License Design by Interspire