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Comment Gateway Pundit, seriously? (Score 0, Troll) 214

Good lord! Why would you use such an unreliable source like The Gateway Pundit? Even when they are accurate, they're stealing their articles from sites that actually employ journalists. The Gateway Pundit (TGP) is an American far-right[2] fake news website.[1] The website is known for publishing falsehoods, hoaxes, and conspiracy theories.[34]

Comment And who is saying this? (Score 1, Troll) 200

The Toronto Sun is part of Postmedia, an American-owned chain that exercises strong editorial control and is basically Fox North.

Canadian Civil Liberties Association seems legit, but the Canadian Constitution Foundation is part of the Koch Atlas network, slipping far-right American money into Canadian politics.

That doesn't mean that they're wrong, but what they say should be examined carefully for fish hooks.

Comment Re:Eletronic fingerprint? (Score 4, Informative) 143

"return the second laptop because the device was capable of accessing Allegro's IT network"

It sounds like they depend on the MAC address for access security, and not-a-one-of-them has ever heard of MAC spoofing. (Or a Pingles can for extending WiFi range to off of company property.)

Comment Re:ZFS is not recommended for non-ECC RAM (Score 1) 295

The E3 series, the most recent versions released in mid 2012. Use the link you provided and select View All E3. Notice the 2011-12 launch dates.

No, that's the first generation E3's. You'll note the page I actually linked you to shows E3 v5, the "View All" link takes you to the database which can only show one generation at a time and defaults to the oldest.

v5 launch dates are Q4'15 through Q2'16.

Comment Re:ZFS is not recommended for non-ECC RAM (Score 1) 295

And that is how airplanes occasionally crash. Its usually not one flaw or problem, its multiple problems/flaws occurring at the same time

Right, because they have safety systems that cover the typical cases. Apple lack those, so it's not just the convoluted multiple problems piling up that will take out their products, it's simple common ones as well.

There is quite a difference between corrupting the inode info / timestamp info and corrupting the **contents of a file**, its user data. That is what is unique about ZFS. File data being **read** is at risk due to automatic repairs of **user data**.

ZFS repairs using redundant copies of data which don't exist on single-disk configurations. All ZFS will do in such a situation is tell you there's an error in a file it can't correct and suggest you restore it from backup. If it's a transient memory or IO error causing the checksum to fail, a second attempt at reading it should work.

Yes, server grade CPUs support server grade RAM. And judging from Intel's data sheets the current generation Xeons are slower (clock rate, more cores though) and generate more heat

More cores?

And the 4-5 year old Xeons you mention

When did I mention 4-5 year old Xeons? Current prices here:

i7 Skylake, £258-£290 for 2.4-4GHz.

E3 Skylake, £162-£508 for 2.9-3.7GHz. If you forgo 4GHz the Xeons are actually cheaper.

Comment Re:ZFS is not recommended for non-ECC RAM (Score 2) 295

For you it may be a low risk. For Apple its not. Apple will be shipping millions of machines.

And these machines are already vulnerable just to single bit errors anywhere both in the IO path and in memory.

The repair-of-death you describe involves multiple errors in the memory path occurring in a specific order and in relatively specific places, that are already dangerous to existing filesystems.

The atime update metadata corruption you quote is similarly already a problem with existing filesystems. In fact it's more of a problem for these filesystems because they're overwriting existing metadata, not creating new copies of metadata that can be rolled back in a disaster as ZFS does.

Even if we take it as true that ZFS is more vulnerable to these specific types of error (by no means demonstrated), that needs to be balanced against all the other errors it's less vulnerable against.

Stop approaching this from the perspective that ZFS is flawed. Rather approach this from the perspective that ZFS assumes memory can be trusted

... so does every other filesystem. I'll quote another bit of that paper you like:

"In addition to ZFS, we have applied the same fault injection framework used in Section 5 to a simpler filesystem,ext2. Our initial results indicate that ext2 is also vulnerable to memory corruptions. For example, corrupt data can be returned to the user or written to disk. When certain fields of a VFS inode are corrupted, operations on that inode fail or the whole system crashes. If the inode is dirty, the corrupted fields of the VFS inode are propagated to the inode in the page cache and are then written to disk, making the corruptions permanent. Moreover, if the superblock in the page cache is corrupted and flushed to disk, it might result in an unmountable filesystem"

Intel is more likely to support ECC in lower end CPUs (ex i3) than in mid to higher end CPUS (ex i5, i7)

i7-class Xeons (E3-XXXX) support ECC and are usually priced basically identically to their i7 cousins. i3's get used in tiny NAS systems like HP Microservers, probably why they come in ECC variants.

Another difficulty for a consumer oriented company like Apple, making using ECC not really an option for them

I'm sure Apple are more than capable of pushing for it if they considered it a priority. They have the purchasing power, they have the margins, they have the PR to make people wet themselves over the benefits if they so choose.

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