-----Original Message-----
From: nat...@nightsys.net
Sent: Thu, 10 Aug 2017 05:39:02 +1000
To: sh...@rackcentral.com
Subject: Re: [AusNOG] NextDC Melbourne - Scheduled Power Maintenance - 15th AugustThis seems reasonable? As long as no single Data Hall has both A and B feeds removed simultaneously, that seems normal. Doing B on Hall 2 and A on Hall 3 on the same day does seem slightly adventurous, but not entirely unreasonable (mostly in terms of if something goes bad in both, staff get stretched thin remediating issues).A and B feeds are designed to provide redundancy to equipment, allowing one feed to fail and systems to continue on the other. Anything mission critical should be able to draw from either feed as required (dual PSU), and if there is a power deficit on one feed (causing circuits to trip), that would imply the circuits are incorrectly sized?In addition, anything mission critical with a single power supply would be on an ATS you would assume, or a pair of equivalent devices installed with one on each rail?Things break in datacentres, planned maintenance happens sometimes, better than no maintenance at all :) The fact they are notifying you is better than not, and it being scheduled is probably still better than unscheduled :) (easier to ensure sufficient staffing to keep a close eye on things)Nathan.On Wed, Aug 9, 2017 at 3:43 PM, Shaun McGuane <sh...@rackcentral.com> wrote:Here is the entire scheduled maintenance windows for all the halls we occupy.
DataHall 2
A Feed - Tuesday 8th August 2017 07:00 UTC +10 until 16:00 UTC +10.
B Feed - Tuesday 15th August 2017 07:00 UTC +10 until 16:00 UTC +10.
DataHall 3
A Feed - Tuesday 15th August 2017 07:00 UTC +10 until 16:00 UTC +10
B Feed - Monday 14th August 2017 07:00 UTC +10 until 16:00 UTC +10
DataHall 4
B Feed - Tuesday 15th August 2017 07:00 UTC +10 until 16:00 UTC +10.
· So looks like no power on 3 data halls B feeds on the same day.
· Data Hall 2 was scheduled for A rail on the 8th of August but has been re-scheduled with no new date of works.
· Data Hall 3 was scheduled for A rail on the
Problem is that I have 3x separate dates on 3 separate e-mails for Data Hall 3 and I have requested a revised clarification
Just now on the above as there has already been re-schedules for Data Hall 2 and 3.
This feels like it’s going sideways and it has not even started.
Regards
Shaun
From: AusNOG [mailto:ausnog-bounces@lists.
ausnog.net ] On Behalf Of Murat Sener
Sent: Wednesday, 9 August 2017 3:20 PM
To: Matthew VK3EVL <hit...@itglowz.com>; ausnog@lists.ausnog.net
Subject: Re: [AusNOG] NextDC Melbourne - Scheduled Power Maintenance - 15th August
Murat Sener Datacentre Manager
PREMIER Technology Solutions
P. 1300 76 76 48 F. 1300 76 76 49 M. 0450 604 350
How am I doing? Let us know!
SIMPLY CLICK ON A FACE TO GIVE FEEDBACK
GREAT
AVERAGE
BAD
From: AusNOG [mailto:ausnog-bounces@lists.
ausnog.net ] On Behalf Of Matthew VK3EVL
Sent: Wednesday, 9 August 2017 3:13 PM
To: ausnog@lists.ausnog.net
Subject: Re: [AusNOG] NextDC Melbourne - Scheduled Power Maintenance - 15th August
What about both feeds happening on the same day at the same time?
On 9/08/2017 2:55 PM, Shaun McGuane wrote:
HI Damien,
My apologies that’s correct – but isn’t anyone concerned about the works being completed during business hours?
What about increased loading of the active rail once one of them is switched off for these works?
Regards
Shaun
From: Damien Gardner Jnr [mailto:rend...@rendrag.net]
Sent: Wednesday, 9 August 2017 2:39 PM
To: <ausnog@lists.ausnog.net> <ausnog@lists.ausnog.net>; Shaun McGuane <sh...@rackcentral.com>
Subject: Re: [AusNOG] NextDC Melbourne - Scheduled Power Maintenance - 15th August
It says 7am -> 4pm in what you quoted? (UTC+10 is AEST)
On Wed, 9 Aug 2017 at 2:36 pm, Shaun McGuane <sh...@rackcentral.com> wrote:
HI Noggers,
Has anyone seen this scheduled maintenance notification happening next week?
They maybe upgrading feeds or boards throughout the datacentre – has everyone seen this notification of works?
It appears to be happening starting 5PM through to 2AM AEST for all Datahalls on the same date.
WHAT:
NEXTDC M1 Melbourne data centre, with the assistance of specialist contractors, will conduct offline preventative electrical maintenance work on high-voltage and low-voltage main isolators. This will affect A and B feeds to the racks in Data Hall 2/3/4 on the 15th of August.
WHEN:
A Feed - Tuesday 15th August 2017 07:00 UTC +10 until 16:00 UTC +10.
B Feed - Tuesday 15th August 2017 07:00 UTC +10 until 16:00 UTC +10.
HOW AM I AFFECTED?
Due to the nature of the work a single feed will be removed as per the dates and times above. We recommend that customers balance the power between both power rails to minimise impact during this period. If you have single feed devices we recommend you:
Regards
Shaun
______________________________
_________________
AusNOG mailing list
AusNOG@lists.ausnog.net
http://lists.ausnog.net/mailman/listinfo/ausnog --
Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rend...@rendrag.net - http://www.rendrag.net/
--
We rode on the winds of the rising storm,
We ran to the sounds of thunder.
We danced among the lightning bolts,
and tore the world asunder
_______________________________________________ AusNOG mailing listAusNOG@lists.ausnog.nethttp://lists.ausnog.net/mailman/listinfo/ausnog
MESSAGE PROTECTED BY PREMIER TECHNOLOGY SOLUTIONS - POWERED BY MAILGUARD.
Report this message as spam
MESSAGE PROTECTED BY PREMIER TECHNOLOGY SOLUTIONS - POWERED BY MAILGUARD.
_______________________________________________
AusNOG mailing list
AusNOG@lists.ausnog.net
http://lists.ausnog.net/mailman/listinfo/ausnog
_______________________________________________ AusNOG mailing list AusNOG@lists.ausnog.net http://lists.ausnog.net/mailman/listinfo/ausnog
