Month: August 2013
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ZFS on Linux (Ubuntu) – arcstat.py is now available! How do you run it?
UPDATE: This information is now out of date, see new post here. One very handy ZFS-related command which has been missing from the standard ZFS on Linux implementation has been arcstat.py. This script provides a great deal of useful information about how effective your adaptive read cache (ARC) is. ZFSoL 0.6.2 includes it,…
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XenServer 6.2: How to boot a VM to CD/DVD rather than disk
We had a situation recently where a customer was experimenting with XenServer 6.2 and Ubuntu VMs; he accidentally powered off the VM during a distribution upgrade and the VM would only boot with a read-only filesystem. Loading an ISO into the virtual CD drive didn’t do the trick; there’s no obvious way of booting…
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Western Digital Se 2TB (WD2000F9YZ) Hard Drive Review
Today we are looking at a new line of drives from Western Digital – the Se range. Click through to read our review of the baby of the new line – a 2TB drive…
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HP ProCurve 2510-24 Power Consumption
We measured the ProCurve 2510-24’s power usage: Idle: 11.9W Peak: 14.8W This was measured on a 240V power circuit with a handful of devices attached (5). The peak wattage was measured during power-on and idle was steady around 11.9W. We would expect power usage to increase as you add more bandwidth-heavy devices;…
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How to install XenServer 6.2 – Step By Step
With the recent public availability of XenServer 6.2 there are an increasing number of people wanting to try it; here is a walk-through of an install so that you know what to expect if you want to try it yourself. In this example we are using a NFS datastore on the network to store…