On Jul 1, 2009, at 11:45 AM, Neal Pollack wrote:
many more.
Do the math. That's many many tons of lead and acid in the dump
every 24 months.
Why do you believe they aren't recycled? Lead acid batteries are
usually recycled very effectively
khb...@gmail.com | keith.bier...@quantu
On Thu, 2 Jul 2009, Ian Collins wrote:
5+ is typical for telco use.
Aah, but we start getting into rooms full of giant 2V wet lead acid cells
and giant busbars the size of railway tracks.
--
Andre van Eyssen.
mail: an...@purplecow.org jabber: an...@interact.purplecow.org
purplecow.
On Thu 02/07/09 10:50 , Haudy Kazemi kaze0...@umn.edu sent:
[getting way OT!]
> With a good quality lead acid battery and appropriate charge management
> system, the battery can last the business life of the server without
> replacement (e.g. 4 years).
5+ is typical for telco use.
> The exper
Erik Trimble wrote:
Neal Pollack wrote:
On 07/ 1/09 05:11 AM, Haudy Kazemi wrote:
Ian Collins wrote:
Or run your systems of DC and get as much backup as you have room
(and budget!) for batteries. I once visited a central exchange
with 48 hours of battery capacity...
The way Google handles
Neal Pollack wrote:
On 07/ 1/09 05:11 AM, Haudy Kazemi wrote:
Ian Collins wrote:
Or run your systems of DC and get as much backup as you have room
(and budget!) for batteries. I once visited a central exchange with
48 hours of battery capacity...
The way Google handles UPSes is to have a sm
On 07/ 1/09 05:11 AM, Haudy Kazemi wrote:
Ian Collins wrote:
Or run your systems of DC and get as much backup as you have room
(and budget!) for batteries. I once visited a central exchange with
48 hours of battery capacity...
The way Google handles UPSes is to have a small 12v battery integ
Ian Collins wrote:
David Magda wrote:
On Jun 30, 2009, at 14:08, Bob Friesenhahn wrote:
I have seen UPSs help quite a lot for short glitches lasting
seconds, or a minute. Otherwise the outage is usually longer than
the UPSs can stay up since the problem required human attention.
A standby
David Magda wrote:
On Jun 30, 2009, at 14:08, Bob Friesenhahn wrote:
I have seen UPSs help quite a lot for short glitches lasting seconds,
or a minute. Otherwise the outage is usually longer than the UPSs
can stay up since the problem required human attention.
A standby generator is needed
David Magda wrote:
On Jun 30, 2009, at 14:08, Bob Friesenhahn wrote:
I have seen UPSs help quite a lot for short glitches lasting seconds,
or a minute. Otherwise the outage is usually longer than the UPSs
can stay up since the problem required human attention.
A standby generator is neede
On Jun 30, 2009, at 14:08, Bob Friesenhahn wrote:
I have seen UPSs help quite a lot for short glitches lasting
seconds, or a minute. Otherwise the outage is usually longer than
the UPSs can stay up since the problem required human attention.
A standby generator is needed for any long outag
> "ms" == Monish Shah writes:
> "sl" == Scott Lawson writes:
> "np" == Neal Pollack writes:
ms> If you are on a UPS, is it OK to disable ZIL?
sl> I have seen numerous UPS' failures over the years,
yeah at my place in NYC we've had more problems with the UPS than with
the s
On Tue, Jun 30, 2009 at 1:36 PM, Erik Trimble wrote:
> Bob Friesenhahn wrote:
>>
>> On Tue, 30 Jun 2009, Neal Pollack wrote:
>>
>>> Actually, they do quite a bit more than that. They create jobs, generate
>>> revenue for battery manufacturers, and tech's that change batteries and do
>>> PM maintena
Bob Friesenhahn wrote:
On Tue, 30 Jun 2009, Neal Pollack wrote:
Actually, they do quite a bit more than that. They create jobs,
generate revenue for battery manufacturers, and tech's that change
batteries and do PM maintenance on the large units. Let's not
It sounds like this is a responsib
On Tue, 30 Jun 2009, Neal Pollack wrote:
Actually, they do quite a bit more than that. They create jobs,
generate revenue for battery manufacturers, and tech's that change
batteries and do PM maintenance on the large units. Let's not
It sounds like this is a responsibility which should be mo
On 06/30/09 03:00 AM, Andre van Eyssen wrote:
On Tue, 30 Jun 2009, Monish Shah wrote:
The evil tuning guide says "The ZIL is an essential part of ZFS and
should never be disabled." However, if you have a UPS, what can go
wrong that really requires ZIL?
Without addressing a single ZFS-specif
s?
Monish
- Original Message - From: "Ross"
To:
Sent: Tuesday, June 30, 2009 3:04 PM
Subject: Re: [zfs-discuss] ZFS, power failures, and UPSes
I've seen enough people suffer from corrupted pools that a UPS is
definitely good advice. However, I'm running a (very low usage
ent: Tuesday, June 30, 2009 3:04 PM
Subject: Re: [zfs-discuss] ZFS, power failures, and UPSes
I've seen enough people suffer from corrupted pools that a UPS is
definitely good advice. However, I'm running a (very low usage) ZFS
server at home and it's suffered through at least h
On Tue, 30 Jun 2009, Monish Shah wrote:
The evil tuning guide says "The ZIL is an essential part of ZFS and should
never be disabled." However, if you have a UPS, what can go wrong that
really requires ZIL?
Without addressing a single ZFS-specific issue:
* panics
* crashes
* hardware failur
Haudy Kazemi wrote:
Hello,
I've looked around Google and the zfs-discuss archives but have not
been able to find a good answer to this question (and the related
questions that follow it):
How well does ZFS handle unexpected power failures? (e.g.
environmental power failures, power supply
From: "Ross"
To:
Sent: Tuesday, June 30, 2009 3:04 PM
Subject: Re: [zfs-discuss] ZFS, power failures, and UPSes
I've seen enough people suffer from corrupted pools that a UPS is
definitely good advice. However, I'm running a (very low usage) ZFS
server at home and it&#x
I've seen enough people suffer from corrupted pools that a UPS is definitely
good advice. However, I'm running a (very low usage) ZFS server at home and
it's suffered through at least half a dozen power outages without any problems
at all.
I do plan to buy a UPS as soon as I can, but it seems
Hello,
I've looked around Google and the zfs-discuss archives but have not been
able to find a good answer to this question (and the related questions
that follow it):
How well does ZFS handle unexpected power failures? (e.g. environmental
power failures, power supply dying, etc.)
Does it c
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