[AusNOG] OT: Brisbane Storm. Gentlemen, start your engines..

[Joshua Lehman]

The power to our fibre to ethernet media converter only has a single PSU and
for some reason when it lost its power and came back on it did not work.
Doing a reboot of the device seemed to bring it back online again. I think
this has prompted us to re look at how we are going to re connect our single
PSU devices.


On Thu, Dec 16, 2010 at 4:03 PM, Scott Howard <scott at doc.net.au> wrote:

> Long term, are you actually expecting your small, in-rack UPS to be higher
> MTBF (and/or lower MTTR) that the datacenters UPS/generator?
>
> If you actually believe that's the case, it's probably time to change
> datacenters.
>
> If you're in a datacenter that only supports providing a single source/feed
> to each rack then there's a slightly better argument for doing this (if only
> because it reduces the potential number of failure points between the UPS
> and the systems), but again, looking to a better datacenter will still be a
> better option.
>
>   Scott.
>
>
>
>
> On Wed, Dec 15, 2010 at 9:55 PM, Skeeve Stevens <Skeeve at eintellego.net>wrote:
>
>> Ok, on this. What do people think of doing your own bottom of rack ups in
>> datacentres which supposedly have good protection with UPS and Gensets, but
>> given industry experience, aren't always 100% reliable?
>>
>> I'm talking only something that gives a short period of time to deal with
>> cutover delays as exampled here.
>>
>> The ups can always be powered by dual feeds with a transfer switch.
>> Thoughts?
>>
>> ...Skeeve
>> --
>> From the Blackberry Bold 9700 of Skeeve Stevens
>>
>> ----- Original Message -----
>> From: Tony [mailto:td_miles at yahoo.com]
>> Sent: Thursday, December 16, 2010 04:45 PM
>> To: Sean K. Finn <sean.finn at ozservers.com.au>; craig at askings.com.au <
>> craig at askings.com.au>
>> Cc: 'ausnog at ausnog.net' <ausnog at ausnog.net>
>> Subject: Re: [AusNOG] OT: Brisbane Storm. Gentlemen, start your engines..
>>
>> I was at Fujitsu (for an unrelated incident) when this happened today.
>>
>> From what I can gather a UPS failed at some point while they were
>> switching load to generators in preparation for the impending storm.
>>
>> The net result was that one of the power feeds to our racks failed. The
>> outage was short, somewhere between 1-30 seconds. Any equipment that was
>> just on the "A" supply lost power and rebooted. Anything that was dual
>> supply (A + B) was fine and continued without issue.
>>
>> Morale of the story - make sure your gear either has dual PSU or you use a
>> power transfer switch to plug all of your single PSU devices into both power
>> feeds (of course you then have a single point of failure in the transfer
>> switch, so choose your poison).
>>
>>
>> regards,
>> Tony.
>>
>>
>> --- On Thu, 16/12/10, craig at askings.com.au <craig at askings.com.au> wrote:
>>
>>
>> > Yes, further reports I have indicate
>> > it was only part of the DC that had
>> > issues.
>> >
>> > Craig.
>> >
>> > > Is that Bris Tech Park?
>> > >
>> > > From: ausnog-bounces at lists.ausnog.net
>> > > [mailto:ausnog-bounces at lists.ausnog.net]
>> > On Behalf Of Joshua Lehman
>> > > Sent: Thursday, 16 December 2010 2:14 PM
>> > > To: craig at askings.com.au
>> > > Cc: ausnog at ausnog.net
>> > > Subject: Re: [AusNOG] OT: Brisbane Storm. Gentlemen,
>> > start your engines..
>> > >
>> > > Yes
>> > > On Thu, Dec 16, 2010 at 2:13 PM,
>> > > <craig at askings.com.au<mailto:craig at askings.com.au>>
>> > wrote:
>> > > 8 mile plains DC ?
>> > >
>> > >> It looks like the DC at Fujitsu is having issues
>> > apparently the UPS have
>> > >> failed.
>> > >>
>> > >
>> > >
>> >
>>
>>
>>
>>
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>
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