Once again a great FreeBSD book to read. I was anxious to read this after reading FreeBSD Mastery- Storage Essentials 2014. I read where he was writing a ZFS book, but didn’t know it was out until I was asked to review it. I loved the introduction, being into hardware and history, it was such great knowledge. I knew some of this information prior, no where near as in depth as these authors covered. The style is so easy to read and mentally kind, it’s always a pleasure to read. Of course ZFS has been used in other Oses (such as Solaris and Linux) and while it is not new to FreeBSD, many people are either afraid of it because they are moving from Linux or they have heard negative things about it.
Tape devices should be used on a regular basis only for archiving files or for transferring data from one server to another. Usually, tape devices are all hooked up to Unix boxes, and controlled with mt or mtx. In this tutorial you will learn about:
- Tape device names
- Basic commands to manage tape drive
- Basic backup and restore commands
I have been a big fan of author, Michael W Lucus for years now. I love his Absolute OpenBSD book and have yet to read one better on OpenBSD. I am also a fan of his book Absolute FreeBSD so was looking forward to reading this. I had high expectations but at the same time really didn’t know what to expect other than I knew I would be able to understand it. I love him as a writer because he truly recognizes the beauty of BSD. His passion for it shows in his writing. I feel like I am the only one with these feelings and then I read one of his books and know I am not alone with this passion for an operating system. His style of writing is always pleasant and I always learn.
For me, I use FreeBSD for a number of reasons. Its stability is a big benefit to those of us who use it for work or at home. It also lets me set it up the way I want it. With FreeBSD if something crashes I have the possibility to understand why it is crashing and how I am going to handle it. If I am lost on how to handle it, this book is a great reference in dealing with disk solutions.
Cloud storage is nothing but an enterprise-level cloud data storage model to store the digital data in logical pools, across the multiple servers. You can use a hosting company such as Amazon, Google, Rackspace, Dropbox and others for keeping your data available and accessible 24×7. You can access data stored on cloud storage via API or desktop/mobile apps or web based systems.
In this post, I’m going to list amazingly awesome open source cloud storage engines that you can use to access and sync your data privately for security and privacy reasons.
Can’t write to the hard disk on a Linux or Unix-like systems? Want to diagnose corrupt disk issues on a server? Want to find out why you are getting “disk full” messages on screen? Want to learn how to solve full/corrupt and failed disk issues. Try these eight tips to diagnose a Linux and Unix server hard disk drive problems.
Cloning is nothing but the copying of the contents of a server hard disk to a storage medium (another disk) or to an image file. Disk cloning is quite useful in modern data centers for:
- Full system backup.
- System recovery.
- Reboot and restore.
- Hard drive upgrade.
- Converting a physical server to virtual machine and more.
In this post, I’m going to list the Free and Open Source Software for Disk Imaging and Cloning that you can use for GNU/Linux, *BSD and Mac OS X desktop operating systems.
Samba is a free software re-implementation of the SMB/CIFS networking protocol. Samba version 4 has been released. It is a major rewrite that enables Samba to be an Active Directory domain controller. I have been waiting years for this option.
The most sysadmin will run low on disk space or storage space. Users will demand more disk space, and you need to free storage space. You will find out files that are a waste of space and delete it or move to an archive medium. However, how do you find the right files to delete that can help recover maximum space? Say hello to agedu tool (pronounced as ‘age dee you’) – it scans a directory tree and produces reports about how much disk space is used in each directory and subdirectory, and also how that usage of disk space corresponds to files with last-access times a long time ago. In other words, this command might help you to free up disk space.
Disk cloning is nothing but the process of copying the contents of one hard disk (or partition) to another disk or to an “image” file. I make backup regularly using rsnapshot tool, but I also clone my hard disk once or twice a month. This option allows me to restore my OS and installed software quickly. Linux comes with various utilities for performing disk cloning. In this post, I’m going to list my favourite open source disk cloning softwares that has saved my butt multiple times.
The iotop command is top like utility for disk I/O. It watches I/O usage information output by the Linux kernel (requires v2.6.20 or later) and displays a table of current I/O usage by processes or threads on the system. This post expalins how to install and use iotop to find out what’s stressing (or program names) on your hard drives under Linux operating systems.