ZFS vs BTRFS on Cheap Dell ServersZFS vs BTRFS on Cheap Dell Servers
I previously wrote about my first experiences with BTRFS [1]. Since then I’ve been using BTRFS on more systems and have had good results. The main problem I want to[...]
Category: Ha
Cheap NAS Devices SuckCheap NAS Devices Suck
There are some really good Network Attached Storage (NAS) devices on the market. NetApp is one company that is known for making good products [1]. The advantage of a NAS[...]
Starting with BTRFSStarting with BTRFS
Based on my investigation of RAID reliability [1] I have determined that BTRFS [2] is the Linux storage technology that has the best potential to increase data integrity without costing[...]
More DRBD Performance testsMore DRBD Performance tests
I’ve previously written Some Notes on DRBD [1] and a post about DRBD Benchmarking [2]. Previously I had determined that replication protocol C gives the best performance for DRBD, that[...]
5 Principles of Backup Software5 Principles of Backup Software
Everyone agrees that backups are generally a good thing. But it seems that there is a lot less agreement about how backups should work. Here is a list of 5[...]
Reliability of RAIDReliability of RAID
ZDNet has an insightful article by Robin Harris predicting the demise of RAID-6 due to the probability of read errors [1]. Basically as drives get larger the probability of hitting[...]
Some Notes on DRBDSome Notes on DRBD
DRBD is a system for replicating a block device across multiple systems. It’s most commonly used for having one system write to the DRBD block device such that all writes[...]
Hetzner Failover KonfigurationHetzner Failover Konfiguration
The Wiki documenting how to configure IP failover for Hetzner servers [1] is closely tied to the Linux HA project [2]. This is OK if you want a Heartbeat cluster,[...]
Why Clusters Usually Don’t WorkWhy Clusters Usually Don’t Work
It’s widely regarded that to solve reliability problems you can just install a cluster. It’s quite obvious that if instead of having one system of a particular type you have[...]
A Basic IPVS ConfigurationA Basic IPVS Configuration
I have just configured IPVS on a Xen server for load balancing between multiple virtual hosts. The benefit is not load balancing but management. With two virtual machines providing a[...]