Yeah bit of a dammed if you do, dammed if you don't type situation.



On 8/10/2017 4:11 PM, Peter Tiggerdine wrote:
disagree.

Outside of business hours costs more with limited staff around to
assist. They're doing you a favour by doing this because if your PSU
fails on server, you'll have time raise tickets with vendor and get
same day resolution.


Regards,

Peter Tiggerdine

GPG Fingerprint: 2A3F EA19 F6C2 93C1 411D 5AB2 D5A8 E8A8 0E74 6127


On Thu, Aug 10, 2017 at 3:14 PM, Chad Kelly <c...@cpkws.com.au> wrote:
Hmm yes actually deciding to do this during business hours does appear to be
an odd choice, even with two PSU in the server, they would be better off
doing this out of business hours I would of thought.
Regards Chad.


On 8/10/2017 2:56 PM, Nathan Brookfield 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] On Behalf Of Chad
Kelly
Sent: Thursday, August 10, 2017 2:54 PM
To: ausnog@lists.ausnog.net; 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 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

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--
Chad Kelly
Manager
CPK Web Services
Phone 03 5273 0246
Web www.cpkws.com.au

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--
Chad Kelly
Manager
CPK Web Services
Phone 03 5273 0246
Web www.cpkws.com.au

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