Today at around 06:30 EDT, VPS.NET engineers did a test failure at their recently launched Japan cloud and it went really well!
No downtime, no data loss, nothing. Exactly as it should work. Kudos to the VPS.NET team! I really hope that they have found the perfect solution for their SANs and that they will begin rolling-out the new technology to their other SANs soon.
Below is the output of sar, about an hour and a half after the test. The lines that indicate that something was going on (i.e. the test failure) are highlighted.
root@dev:~# sar<br /> Linux 2.6.32-5-xen-amd64 (dev) 09/22/2011 _x86_64_ (3 CPU)</p> <p>[...]<br /> 04:35:01 AM CPU %user %nice %system %iowait %steal %idle<br /> 04:45:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 04:55:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 05:05:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 05:15:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 05:25:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 05:35:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 05:45:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 05:55:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 06:05:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 06:15:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 06:25:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 06:35:01 AM all 0.02 0.00 0.02 0.01 0.00 99.95<br /> 06:45:01 AM all 0.07 0.00 0.04 0.24 0.00 99.66<br /> 06:55:01 AM all 0.07 0.00 0.03 6.35 0.00 93.55<br /> 07:05:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 07:15:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 07:25:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 07:35:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 07:45:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 07:55:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 08:05:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> 08:15:01 AM all 0.00 0.00 0.00 0.00 0.00 100.00<br /> Average: all 0.00 0.00 0.00 0.13 0.00 99.86
root@dev:~# uptime<br /> 08:16:20 up 8 days, 4:35, 1 user, load average: 0.00, 0.00, 0.00
3 Responses to VPS.NET Japan cloud test failure – Success!
eebs September 22, 2011
Flawless. Server didn’t feel a thing
Avery J. Parker September 23, 2011
That is a great sign – good statistic catch. I hope that this new SAN structure will make a good solid platform at the other datacenters. Atl-E has been rough lately. Here’s hoping that things will be looking up!
George Tasioulis September 24, 2011
Hope that we’ll soon see the new SAN technology on other clouds too.