Mark,
Totally agree. I would just like to know what law Simon was
referring too?
Regards,
Jared Hirst
Servers Australia Pty Ltd
Phone: +61 2 8115 8801
Email: jared.hi...@serversaustralia.com.au
<javascript:_e(%7B%7D,'cvml','jared.hi...@serversaustralia.com.au');>
------------------------------------------------------------------------
*From:* AusNOG <ausnog-boun...@lists.ausnog.net>
<javascript:_e(%7B%7D,'cvml','ausnog-boun...@lists.ausnog.net');>
on behalf of Mark Newton <new...@atdot.dotat.org>
<javascript:_e(%7B%7D,'cvml','new...@atdot.dotat.org');>
*Sent:* Friday, August 11, 2017 4:54:10 AM
*To:* Nathan Brookfield
*Cc:* ausnog@lists.ausnog.net
<javascript:_e(%7B%7D,'cvml','ausnog@lists.ausnog.net');>;
ausnog-requ...@lists.ausnog.net
<javascript:_e(%7B%7D,'cvml','ausnog-requ...@lists.ausnog.net');>;
Chad Kelly
*Subject:* Re: [AusNOG] NextDC Melbourne - Scheduled Power
Maintenance -, 15th August
As someone who has run colo facilities before:
It should be made completely clear during customer onboarding
that the facility operator can temporarily shut down a power feed
at any time. Advance warning should be desirable but optional.
If there is risk involved in doing that, it’s your job to
mitigate it. The facility operator doesn’t know which bits of
equipment in your tenancy are critical, and they’ve already told
you to dual-feed where possible and use a rack-mount ATS for
single-corded equipment.
Power work should be done during business hours, because it’s
almost impossible to get emergency support or source replacement
equipment out of hours.
If it isn’t safe to take a power feed offline during business
hours, then you (the customer) have a design problem to solve.
- mark
> On Aug 10, 2017, at 6:56 AM, Nathan Brookfield
<nathan.brookfi...@simtronic.com.au>
<javascript:_e(%7B%7D,'cvml','nathan.brookfi...@simtronic.com.au');>
wrote:
>
> Chad,
>
> That's all well and good but when you're paying a premium price
for services of this fashion you expect a certain level of
service. There is a risk no matter what when switching from power
supplies taking extra load they would not usually take as well as
swing load issues with PDU's.
>
> I completely agree with your sentiment but the risk is not to
be ignored especially during those times.
>
> Kindest Regards,
> Nathan Brookfield (VK2NAB)
>
> -----Original Message-----
> From: AusNOG [mailto:ausnog-boun...@lists.ausnog.net
<javascript:_e(%7B%7D,'cvml','ausnog-boun...@lists.ausnog.net');>]
On Behalf Of Chad Kelly
> Sent: Thursday, August 10, 2017 2:54 PM
> To: ausnog@lists.ausnog.net
<javascript:_e(%7B%7D,'cvml','ausnog@lists.ausnog.net');>;
ausnog-requ...@lists.ausnog.net
<javascript:_e(%7B%7D,'cvml','ausnog-requ...@lists.ausnog.net');>
> Subject: Re: [AusNOG] NextDC Melbourne - Scheduled Power
Maintenance -, 15th August
>
>
>
> On 8/10/2017 10:13 AM, ausnog-requ...@lists.ausnog.net
<javascript:_e(%7B%7D,'cvml','ausnog-requ...@lists.ausnog.net');>
wrote:
>> From the latest update today, It appears that most of the
works are
>> being postponed for the time being
>>
>> Not all devices within racks support 2 feeds and planning is
involved
>> with these devices, which is why it is crucial to receive
accurate information about any pending outages or upgrades to the
NextDC DataCentres which affect services.
> If these services are mission critical then you really should
have duel PSU units, so that when one feed gets taken offline the
equipment automatically switches to the other feed. They won't
just disconnect both feeds at once because that would be stupid
and if the entire DC was offline for too much time then that
would put the owners in a rather awkward situation legally, as
after say 8 or 10 hours of downtime it wouldn't be good for the
owners lets put it that way.
> If the single PSU units are a part of a customers co-located
equipment then really your terms of service agreement should
exclude liability under your maintenance clauses.
> I don't understand why anyone would be using single PSU
equipment in a DC environment now a days when you can buy
refurbished servers that come with two PSU as standard even when
you buy them without raid.
> Also for anything that is really really mission critical you
should have it hosted in multiple datacentres anyway so if
something stupid does happen that you can't control you at least
still have services online as the load balanced services would
just switch.
> Regards Chad.
>
> --
> Chad Kelly
> Manager
> CPK Web Services
> Phone 03 5273 0246
> Web www.cpkws.com.au <http://www.cpkws.com.au>
>
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