Louwrentius

On February 2011, I posted an article about my motivations why I did not use ZFS as a file system for my 18 TB NAS.

To gain some more experience with FreeBSD, I decided to make a PXE-based unattended installation of FreeBSD 10.1.

I've created a tool called procurve-watch.

The VRRP or Virtual Router Redundancy Protocol helps you create a reliable network by using multiple routers in an active/passive configuration.

Systemd is a more modern replacement of sysvinit and its in the process of being integrated into most mainstream Linux distributions.

TL;DR Yes it works with some modifications of the driver source.

If something goes wrong with my zpool, I'd like to be notified by email.

This article is no longer relevant.

In this blogpost I argue why it's strongly recommended to use ZFS with ECC memory when building a NAS.

This is my new 71 TiB DIY NAS.

Update 2014-8-23: I was testing with ashift for my new NAS.

I'm in the process of building a new storage server to replace my 18 TB NAS.

If you want to build a home server, it may be advised to actually use server-grade components.

If you are considering implementing DFS replication, consider using Windows 2012 R2 because DFS replication has been massively improved.

I'm responsible for a file server with about 5 terrabytes of data.

At work, access to the internet is provided by a 10 Mbit down / 1 Mbit up ADSL-connection.

At work we have a couple of HP MSA P2000 G3 SANs.

Here are some notes on creating a basic ZFS file system on Linux, using ZFS on Linux.

IPsec is a well-known and widely-used VPN solution.

Linux Bonding In this article I'd like to show the results of using regular 1 Gigabit network connections to achieve 450 MB/s file transfers over NFS.

ZFS is a modern file system designed by Sun Microsystems, targeted at enterprise environments.

I'm performing some FIO random read 4k I/O benchmarks on a ZFS file system.

Updated post (June 2014) found HERE There are some reasons why you should consider buying true server-grade harware when building a server, wether it's for home or business use.

I've created and released Eztables on Github.

Please use this tool on github instead of this ancient script.

I wrote a small Python script called 'showdisks' that displays relevant information about any physical storage devices supported by hdparm.

I find playing a Blu-ray movie on my Mac cumbersome.

My server has 5 network interfaces and I wanted a quick overview of some properties.

To learn more about HAProxy I decided to compile it from source and use it to load-balance traffic to louwrentius.com across two different web servers.

I came across this Redhat security blog post that explains why the chroot command has it's uses, but it isn't magic security pixie dust.

I was looking at open-source load balancing software and it seems that there isn't a nice overview except from this website, although many of the listed projects seem dead.

This blog is a static website, which makes it fast, simple and secure.

In the past, as a Mac user, I've used separate external drives for Time Machine backups and Super Duper clones but I'm not happy with that.

When you use cloud services, you are storing your data on other people's hard drives.

In Accidental Tech Podcast episode 18 (love the show), I learned that John Siracusa was thinking about buying a new Mac Pro for gaming.

10 Gb ethernet is still quite expensive.

Edit 2019: I've made a new tool called 'fio-plot'to create various graphs.

Linode has released an update about the security incident first reported on April 12, 2013.

I bought a Linode VPS for private usage just after the report that Linode had reset all passwords of existing users regarding the Linode management console.

There is a fundamental difference between a read operation and a write operation.

Introduction I have performed some benchmarks to determine how different RAID levels perform when handling a 100% random workload of 4K requests.

In this day and age of dynamic web content, how relevant can a caching proxy server be?

Update 2020: I've written another blogpost about this topic, including some benchmark examples.

To get a list of all disk drives of a Linux system, such as this: Disk /dev/md0: 58.0 GB Disk /dev/md1: 2015 MB Disk /dev/md5: 18002.2 GB Disk /dev/sda: 60.0 GB Disk /dev/sdb: 60.0 GB Disk /dev/sdc: 1000.1 GB Disk /dev/sdd: 1000.1 GB Disk /dev/sde: 1000.1…

If you are running a serious VMware environment, chances are you do have a SAN.

Computer nerds are self sufficient when it comes to fixing their computer.

I don't have a TV.

I really like ZFS because with current data sets, I do believe that data corruption may start becoming an issue.

If you want to compile PAR2 with multicore support on Linux, it may not work right away from source.

Security is all about a defence-in-depth strategy.