* Posts by TheVogon

1659 posts • joined 17 Jan 2013

King's College London staggers from outage, replaces infrastructure services head

TheVogon
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Re: there but for the grace of God...

"Nothing to do with SATA and everything to do with size."

No, it's far more to do with SATA than the size - the RAID set size is only a linear relationship to risk of failure. The hard Bit Error Rates (BER) on SATA disks are far higher than on Fibre Channel, SAS, or SSD disks. Therefore the chances of a hard error during a RAID set rebuild are much much higher.

"even RAID6 is not good enough once you get past 10TB"

Nope - again wrong - RAID 6 will last you reasonably safely well past that. So for instance RAID 6 would be fine for most uses for 4TB disks in a set of 14:2. Which gives a per RAID set size of 64TB including parity... Which would have a hard failure probability rate over ten year of 0.03304 % or better.

See https://www.servethehome.com/raid-calculator/raid-reliability-calculator-simple-mttdl-model/

Using:

(MTBF): Manufacturer Spec, Enterprise (1.2M)

Non recoverable Error Rate (SATA) : 10^15

Drive Capacity: 4TB

Sector Size: 4KB

Quantity of Disks: 16

Volumes: 1

Volume Rebuild Speed (MB/s): 15MB/S

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TheVogon
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"No sane contractor is going to stay in the Public Sector past April 2017 anyway"

They will. They will just adjust rates accordingly so that net income is unchanged. Which will cause some major budget and / or resource issues for public sector projects I suspect...

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TheVogon
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Re: there but for the grace of God...

Speak for yourself. Some of us make sure there are backups and was know that RAID6 is required for SATA disks. And have a DR that actually works..

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How to solve your Microsoft storage challenges with All-Flash NVMe

TheVogon
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Pfft.

NVMe is behind the curve these days. Window Server 2016 fully supports NVDIMM storage.

See http://www.theregister.co.uk/2016/10/28/windows_server_2016_persistent_memory_support_supercharges_storage_io/

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Microsoft's 'Samaritan' refuses help to hackers doing Win 10 recon

TheVogon
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Re: That's nice

>> Although why MS couldn't have done it themselves, $deity_of_your_choice alone knows

If you actually read the article, you will see that they already did:

"The Windows Anniversary update version changed the default security descriptor for the SAM access to limit the remote querying of SAM to local administrators only, even if the aforementioned registry key is not present. "

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Passengers ride free on SF Muni subway after ransomware infects network, demands $73k

TheVogon
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Re: Sign of the times

"It would be nearly impossible to lose all electrical power"

So possible then.

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SQL Server on Linux: Runs well in spite of internal quirks. Why?

TheVogon
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Re: Exchange?

"a spreadsheet containing a virus of some kind, and it's previewed in 'Virus Outbreak' (aka MS Outlook), "

Outlook hasn't run active content in preview for at least a decade now....Your knowledge is way outdated.

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Reg man 0: Japanese electronic toilet 1

TheVogon
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Ah, so IoT really means Internet of Toilets?

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Glacier melt race increases vastly … for AWS cold storage

TheVogon
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See also https://sites.google.com/site/arctischepinguin/home/sea-ice-extent-area/grf/nsidc_global_extent_byyear_b.png

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Microsoft ❤️ Linux? Microsoft ❤️ running its Windows' SQL Server software on Linux

TheVogon
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Re: Target audience?

"Would be cool if El Reg would publish the shill's IP addresses. I think Vogon would very quickly change the tune on MS and security."

I'm nothing to do with Microsoft and never have been if that's what you are implying! I currently work at a FTSE 100.

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TheVogon
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Re: Target audience?

"it was always a security worry. If we had found an equivalent functionality/equivalent price application that directly supported MySQL or Postgres"

You release MS SQL has a way better security record than both of those?

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TheVogon
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Re: Target audience?

""Organizations that want 'free' but don't care about 'open-source'? SQL Server Express running on Linux means a proper database for no money""

That's probably where this is headed - let devs that like trendy OSS stuff play with this to develop / test on, but when you need to scale up / care about security / want production grade clustering, you can uplift to Windows Server....

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UK.gov has 18,000 IT contractors on its books due to dearth of skills

TheVogon
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Re: Common Misunderstanding

"The president of the United States only gets paid 400k to be the CEO of 330 million people"

But also probably will then get paid that per after dinner speech at investment banks, etc, etc...

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AWS has a lousy hybrid cloud story. VMware may fix that soon

TheVogon
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Re: vSphere isn't a private cloud

"why would I need a self service portal and full automation and charge back"

Because of TCO.

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Google and Microsoft are playing catchup with AWS's cloudy power

TheVogon
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Re: "Google took 7.4 per cent of the market but grew 80 per cent."

7.4% for Google to me is unbelievable. I have yet to come across anyone at all using Google for cloud infrastructure. I wonder if the "research from Canalys" is based on actual measurements?

Most peers and companies I talk to are either using AWS and or Azure. The preferred target going forwards seems to be Azure.

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TheVogon
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Re: "Google took 7.4 per cent of the market but grew 80 per cent."

"Google has the most impressive cloud tech."

Based on what assessment / criteria?

Most impressive to me (other than the tool set) is the fastest storage performance and lowest latency options - and as far as I am aware Azure wins both of those hands down...

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Amazon's cloudy 'WorkSpace' desktops-as-a-service gain a GPU

TheVogon
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Re: Latency?

Remote graphics certainly works fine in 4K / PCoIP hardware remote display with solutions like AmuletHotkey and LAN / WAN connections

How it works with software based rendering and an internet connection is probably rather less great and presumably somewhat more resource intensive...

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Encrypted email sign-ups instantly double in wake of Trump victory

TheVogon
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Re: Who was signing up?

"I guess that was Hillary and her friends migrating email providers"

Or Donald's new team preparing for power....

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China passes new Cybersecurity Law – you have seven months to comply if you wanna do biz in Middle Kingdom

TheVogon
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"If only they had an equally strong approach to intellectual property laws."

But they do - they stand up to big companies that abuse IP - see

http://www.bbc.co.uk/news/business-36200481 and

http://www.bbc.co.uk/news/business-18669394

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Facebook opens up, shares blueprints for its 100Gbit network switch

TheVogon
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Re: Another example of how 'Pointless' G.fast is obsolete?

"We need to at least make the break from Copper for everything"

Virgin Media quite happily deliver me 200 mbps down / 20 up over copper co-ax. It's not quite dead yet...

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US citizens crash Canadian immigration site after Trump victory

TheVogon
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Re: Wall Building

"I look forward to the boom in construction at the U.S. land borders."

Yep, the Canadians will need a wall to keep the Americans out....

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Karhoo who? Uber challenger shuts down after burning through $250m

TheVogon
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Re: Many of them have worked unpaid for the last six weeks

Never heard of them.

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We're great, you don't understand competition law, Google tells Europe

TheVogon
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Re: Most of DuckDuckGo comes from Bing - which is largely why it tends to be better than Google...

"Not Bing not any longer at least:"

Yes it does: https://duck.co/help/results/sources

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Hitler's wife's lovely lilac knickers fetch £2,900 at auction

TheVogon
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That's a lot of money for scratch and sniff...

Cheaper in Japan: https://www.youtube.com/watch?v=jkMGhKGp--Y

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Tesco Bank limits online transactions after fraud hits thousands

TheVogon
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Re: As I understand the situation

"Tesco bank has not been directly hacked as part of this event although there are a lot of comments suggesting it has been"

So why block logons to online banking? That suggests that they have been totally hacked...

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Web devs want to make the Internet of S**t worse. Much worse

TheVogon
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Re: If this takes off

"kettles, toasters"

Just why??

See https://www.youtube.com/watch?v=LRq_SAuQDec

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Microsoft puts Windows Updates on a diet with 'differential downloads'

TheVogon
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Better late than never.

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Facebook chokes off car insurance slurp because – get this – it has privacy concerns

TheVogon
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Re: Precious

This must be some new meaning of the word "privacy" I had not previously encountered that actually means "because we couldn't bill them for it."

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TheVogon
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Re: I presume it has more to do

"Or, y'know, unable, due to being infirm, etc ..."

Then you shouldn't be driving. See for instance: http://www.bbc.co.uk/news/uk-england-leicestershire-37834668

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Smart Meter rollout delayed again. Cost us £11bn, eh?

TheVogon
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Re: Smart meters have only ONE purpose

"You say that as if it's a bad thing."

I say it as a customer that is paying my share of £11 billion for it when it has zero direct benefit to me...

"How would you rather your electricity company dealt with non-payers?"

The same way they do now. Be forced to use legal methods to physically access the property.

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TheVogon
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Re: Smart meters have only ONE purpose

"The "streamlining" of meter reader numbers."

You forgot cutting off the supply without entering the property for non payers...

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Microsoft ends OEM sales of Windows 7 Pro and Windows 8.1

TheVogon
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Re: "When the time comes" (a.k.a. The Year of the Linux Desktop)

GNU/Linux is not some corporation that can go bankrupt and disappear.

But it can stay irrelevant to most people.

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TheVogon
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"They will enter the job market with next to zero influence from Microsoft"

I doubt that. If it's office based, then most people need to use Microsoft Windows and Microsoft Office for a job.

Education tends to reflect workplace requirements - all the kids round here have Office 365 at school and use Microsoft Office in IT lessons.

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Ghost of DEC Alpha is why Windows is rubbish at file compression

TheVogon
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Re: Obvious bull

File system compression usually isn't the way to go these days as disk is relatively cheap and because it can have a high overhead.

At the SME / enterprise level where storage savings can stack up, Thin provisioning and maybe deduplication is often more what you need...

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HPE: Wanna revive that support deal for your software? Ha ha ha, har

TheVogon
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Re: Renegotiation is the issue, this is:

"will have no choice but to negotiate and purchase new support contracts."

Nope - doesn't say that! Says that you will no longer be able to reinstate them. Implication is that you will have to buy new product / licences to be supported...

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Quest celebrates first day of independence from Dell with layoffs

TheVogon
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Re: They've not changed then.

I previously had lots of problems with shoddy / buggy Quest releases that caused stability issues in production. This directly cost them sales, so maybe they should revisit that approach.

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KCL out(r)age continues: Two weeks TITSUP, two weeks to go

TheVogon
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Re: slap in a new HD, watch it bork

"Raid controllers are best avoided these days.

Seriously, you're better off with software RAID or ZFS - at least that way"

Just LOL I bet you don't work in mission critical. NO ONE uses software RAID these days in production.

"You know you can shove the drives in anything and they'll still be readable."

Well, no you can't - you now have to shove them in something running a specific OS that understands the disk config. And what about protecting your boot volume?

"The processing power on a raid card is peanuts compared to that of an average desktop CPU these days (raid doesn't even make them get warm), let alone a server."

It really isn't. Large disk array controllers often have things like several multicore Xeons in them these days...

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TheVogon
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"Even RAID6 is risky once you get past about 10TB."

Nope. Risk for RAID 6 is still close to zero even in worst case of say 14+2 using multi-terabyte SATA disks. See http://pics.aboutnetapp.ru/hds_raid_5_and_raid_6_risk_of_data_loss_probability.jpg

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Uber, Lyft drivers shamed for 'racial bias' by uni eggheads

TheVogon
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Re: Unregulated service behaves in an unregulated manner

They can't say "I refuse to serve you because what you want is against my religion"

So will all Muslim shops and restaurants be forced to serve alcohol and bacon sandwiches?

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Oracle takes aim at AWS with cheap, fast public and hybrid cloud

TheVogon
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Re: Oracle

It's worth looking at what AWS offer vs Oracle if they want to compare costs, see http://cloud-computing.softwareinsider.com/compare/5-248/Amazon-Inc-vs-Oracle-Corporation

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See that red spot on the chart? Sail over it and you'll find a Russian sub

TheVogon
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Re: Russian aircraft carrier Admiral Kuznetsov

"the pride of the Russian aircraft carrier fleet"

It's a "fleet" of 1....

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Wow, still using disk and PCIe storage? You look like a flash-on victim, darling – it isn't 2014

TheVogon
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"The problem with persistent memory at the moment is that it requires code-level changes"

No it doesn't. See https://channel9.msdn.com/events/build/2016/p466

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Let's praise Surface, not bury it

TheVogon
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Re: Your looking at the market wrong

"lavishly over-engineered and ludicrously expensive"

It seems to work for Apple.

The best device I think Microsoft released was the "Microsoft Surface Studio" which is an awesome bit of kit and "out Apples Apple"...

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LASER RAT FENCE wins €1.7m European Commission funds

TheVogon
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"it'll be an arms race"

Rat race surely?!

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TheVogon
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Re: Pulsed agrilaser in the 40W range

"Thus, getting a cat will not eliminate or keep other cats away, it will simply cause your property to be time shared."

If the cats consider it native territory, they don't generally crap there, so it still solves the original problem...

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TheVogon
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Re: Pulsed agrilaser in the 40W range

"Unfortunately I'm allergic to cats."

See http://www.hypoallergeniccats.co.uk/

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Finally, that tech fad's over: Smartwatch sales tank more than 50%

TheVogon
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Re: Garmin

"Smartwatches are already chunky and naff"

+1 - everyone ends up looking at their phone anyway. Plus you can buy a half decent real Swiss watch for the cost of one....

Until they can "beam me up" - i'm not interested...

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And so we enter day seven of King's College London major IT outage

TheVogon
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Re: See it all the time

"And they don't keep spare disks on hand - they have to be ordered."

That's OK if you have hot spares in your arrays. Otherwise you should really keep some onsite spare disks (and replace your stock via a warranty / maintenance claim each time one fails)...

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TheVogon
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" .or more of an issue."

We already know that's likely not the case as enterprise class SSD disks have much lower Bit Error Rates than SATA...

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TheVogon
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"For critical data, I'm now only using RAID 10"

That's very expensive on disks / slots though - so not ideal for many deployments. Most commonly in disk arrays these days SATA storage uses RAID 6 (or RAID DP), and SSD / FC uses RAID 5.

High end arrays also often have additional inbuilt error correction / redundancy striped across the RAID sets - for instance 3PAR does this...

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