This is, to put it mildly, utter bullshit.

You can store a decade of email for a million people—call it 10-20Gb each—in a 10-20Pb storage array that costs under £1M per year (and is constantly getting cheaper). 10 year old emails are *cold* storage: drives not even spinning most of the time: you only really need 5-10% of it available on demand.

The environment agency are gaslighting us. One wonders who put them up to it?
social.lol/@robb/1150165791501

@cstross who put them up to it? stab in the dark...Google. I haven't used gmail in a spell but the last time I did like a year or so ago it was harping on lowering their gmail and drive storage while pushing you to "pay to upgrade" to save all those "valuable photos and emails"

"don't want to delete those emails and photos to save water? no problem, upgrade your Google Account for a premium and you can save all those precious moments in our state of the art energy and cooling efficient data centres"

@cstross

It’s even worse than that. Old emails will be cool storage. Cloud providers are really power efficient for this. But when you delete things, that invokes doing a load of compute, which consumes power.

I doubt it’s intentional gaslighting though. It’s far more likely to be ignorance.

@cstross It's the same as "carbon footprint". You point out something about a person, and tell them to be responsible as a distraction, while somewhere else an industry pollutes and wastes like there is no tomorrow.

If everyone installed an adblocker then that would save a lot of electricity and eventually water, but I notice that wasn't suggested...!

@cstross the issue with this isn't just the fact their "solution" is bollocks, it's that an actual solution (to the water usage) is fucking easy.

Data centres use evaporative cooling because it's cheaper to use tonnes of potable water to cool stuff than to run a refrigeration loop at that scale. But not a lot cheaper, not really. Tax the use of potable water for cooling and data centres will switch, rapidly, to non-evaporative cooling.

@cstross

At a former workplace, I was investigated and reprimanded for misuse of email.*

Because I had 4 emails other people had sent me. Emails that were jokes, not work-related.

My alleged crime? I had read the 4 emails, and then I hadn't deleted them. So I was wasting resources. Email storage costs!

*I was actually investigated because my supervisor complained to the director that a manager was bullying us. So the director decided investigating the victims was not a waste of resources.

@cstross Seems more like well intentioned advice from someone who doesn't really understand how computers work than deliberate misdirection, to me. As in, they're partly right: data centres do require vast amounts of power and (depending on how the chillers work) water. They just don't understand how little impact your email box has towards it, that's all.
@Salty No, it's got a very special flavour of "do your bit for the war effort" that British governments have been using for their own ends ever wince WW2 had a round-up of aluminium saucepans and cast-iron fences to build Spitfires and tanks (spoiler: they didn't, but a lot of people had trouble cooking or broke their neck falling down cellars that should have been fenced off).
@cstross You're off by a factor of a thousand or so. 1024 GB in a TB. A 20 TB NAS would = 20480 GB. If you gave each use 20 GB, you're talking 1,024 users, not a million.

Still, using 35 TB drives, you could have a 8 disk NAS with storage capacity in excess of 200 TB and have it be double fault protected against failures. That would get you up to 10k+ users at 20 GB quota each.

@cstross

That's not strictly true.

Long term storage of email data is not Byte per Byte cost.

First, you want to make the data redundant, that's usually x3 for raid 5
Second you need some sort of offline backup schema.
Third, you probably have ability for live backups, a beefy SAN with fibre backbone.
Fourth, all that kit is connected via high speed networking that's always powered.
Fifth, if you want any degree of reliability and scalability, you are not running a single server with single raid. You're running multiple racks.
And the cherry on top, all that shit is in a computer room that runs at constant 20C and shuts down after 30minutes of AC failure.

No infrastructure email is kept on a single NAS.

@cstross How the fuck does emails stored on a company's server in a different country than the one I reside in change the amount of water I use locally by even a single drop?

Also, how exactly does watering plants with kitchen water use any less water than using any other tap? Are they talking about garden hoses for full lawn-sized gardens? Because that's giving some real Marie Antoinette vibes.

@cstross to put some numbers on it, one of our hosting VMs has ~1200 mailboxes using 1.5TB of SSD. Accounting for the CPU + RAM to allow the mail to be usable and searchable, you can get ~20 such servers on our standard 1U VM host, that uses ~250W. Approx 24k mailboxes on a server. A standard DC with adiabatic cooling would evaporate at most (likely much less) than 3500l of water per server per year or 145ml per account. We're in Telehouse South which uses 40x less water ~ 3ml/mailbox/year.
@cstross it's so, so far beyond bullshit. 10-20TB? These are systems that scale to thousands of PETABYTES.

And your old emails? You could throw 8, 10, 16TB up there and they're all consuming ZERO power. Not 'negligible.' ZERO.
Because you simply can't operate at that scale and keep everything on all the time. Just failure rate ALONE.
So all those infrequently accessed blocks get moved to disks that sit there turned fully off for weeks, months, *years* at a time until someone accesses them.

@electropict It's worth noting that NAS boxes use boring old-fashioned CPUs; you can even run a toy NAS at home with a Raspberry Pi for a brain. Running a storage array doesn't require much computing power. Whereas the GPUs that run AI server farms consume hundreds of times more leccy AND DO SO CONTINUOUSLY because running AI models is horrifically compute-intensive.
@lauren @cstross facebook cold storage keeps the full resolution images on powered off HDDs -special unix filesystem to support power off without unmounting, hardware protection on #of disks which can be powered up and more. Low power/water picture stores are a solved problem
https://engineering.fb.com/2015/05/04/core-infra/under-the-hood-facebook-s-cold-storage-system/
@lauren @cstross

This does put me in mind of an incident when I was working for a 'hot' consultancy during the glory days of the .com bubble.

Tony Blair's minister for Science and Tech came with her entourage to glean words of wisdom from us.

After the meeting was over, the head of the London office turned to me and asked me what I'd thought of it.

"I don't think we'd hire any of them" I said

"I don't think any of them would get past the phone screen" was his reply
@awhite @cstross @lauren perhaps someone at the Environment Agency wanted to write the truth, but the copy got overruled by senior management who want to toe the party line. The original writer then put out an intentionally unbelievable line that email storage is the problem, not AI or Blockchain, it got people talking. Those that didn't know of the energy use of data centres at least got into the mindset that data centres waste power on trivial tasks.