Switched On Tech Design
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How to find kernel version in Ubuntu 12.04 Precise Pangolin
Note: This also works in other versions of Ubuntu, such as 11.10, 11.04, 10.10, 10.04 and earlier. Sometimes you may wish to find out which kernel you’re currently running; fortunately, this is quite easy to do with the uname command. If you’re running Ubuntu Desktop, open up a Terminal; if you’re using Ubuntu Server…
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Enabling SSH on ESXi 5.0
Enabling SSH is handy if you want to remotely access the back-end of your system; it can also be really handy for moving files around and transferring data to and from Linux systems or VMs securely and quickly. There are security risks with doing this; if anyone logs in to the root account of your…
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Unable to remove an inactive datastore in ESXi 5.0
If you have found one of your datastores is greyed out/inactive one solution is to unmount it and add it again; sometimes ESXi won’t let you do this, giving the following error message: “Error: The resources ‘ip.of.data.store:/data/location’ is in use. Error stack: Call “HostDatastoreSystem.RemoveDatastore” for object “ha-datastoresystem” on ESXi “ip.of.your.esxi” failed. The fix is…
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How do you tell which zpool version you are running?
This is a question that crops up fairly regularly, as different operating systems support different zpool versions. Fortunately, it’s quite easy to find out which versions you are running – simply run: # zpool upgrade If you want a more detailed readout, including the features of the pool version you have, try: …
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Customer Build: Luna II
Here’s a few shots of one of our recent storage server builds:
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Scythe 92mm S-Flex SFF92B fans
We’ve been trying to find a 92mm fan we’re happy with for a little while; this is the latest contender, the Scythe 92mm S-Flex. Featuring a Sony Fluid Dynamic Bearing, it’s supposed to be quiet and efficient – we’re trialling it on some of our 4U CPU coolers to see how it fares in terms…
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Installing a Corsair H100 cooler into a Norco 4224/4220 chassis
One of the most asked-about combinations we’ve done recently has been putting a H100 into a storage chassis; so long as your motherboard isn’t too large (e.g. SSI EEB or equivalent) it’s quite easy to do.
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Corsair SP120 Overview/Review
Corsair’s new lines of fan are divided into AF – for airflow in open-air setups – and SP, or static pressure-oriented fans, more designed for placement adjacent to radiators or other areas where airflow is tight. The fans we’re looking at today are the 120mm SP range:
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Asus Z9PE-D16 Review: Part Two
Here is the follow-up to our initial review of the Asus Z9PE-D16 motherboard!
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Asus Z9PE-D16 review: Part One
Up for review today we have one of Asus’ dual-socket-2011 server motherboards – the Z9PE-D16. Hit the break to find out what it’s all about and why you might care about it even if you don’t need to run two CPUs…