Posts made by travisdh1

@scottalanmiller You'll want to double check you're article on the cult of ZFS, that was a direct quote. I know it's just a typo.

@xrobau said in Changes at Sangoma:

@travisdh1 You still seem to be hung up on the RAID concept of parity. Truly, honestly, that's not how ZFS works. I cross my heart. It works on copies of data. Literal, exact, copies of the data.

Unfortunately, THIS is where the 'ZFS Can't expand a volume' problem comes into play. Because the location of those copies (on the physical spindles) is made by hashing the size and number of volumes in a zraid (I'm kinda simplifying here, but work with me!)

So if a ZRAID2 has 5 spindles, that means that a copy of block 1 of the zpool will be placed on spindle 1 at sector 10, 3 at sector 100 and spindle 5 at sector 500. The location of that doesn't need to be looked up, because it can be calculated.

The 'expansion' problem comes about because if you add another spindle to that ZRAID2, suddenly block 1 would be on spindle 1 at sector 10, spindle 3 at sector 500 and spindle 6 at sector 1000 (or whatever). So the location of the data would be wrong, and everything falls apart.

(Now, this is actually wrong, and there IS an index, but, that's advanced stuff, and this is good enough for you to get the idea).

Does that make more sense?

Not at all, because you are describing RAID 5/6. There is nothing special or different here.

@xrobau said in Changes at Sangoma:

@travisdh1 I don't know what a RAID Lever is? Something to do with tuning?

Geesh, you're so bad as Scott.

@xrobau said in Changes at Sangoma:

@travisdh1 maybe they mean RAID LEVELS? Not levers? Which is correct. ZRAIDx means there are X ADDITIONAL copies of the data. ZRAID2 has 3 copies of each chunk, spread across physical devices. The "X" number is how many HDDs the zraid can tolerate failing.

The difference to RAID6 (for example) is that RAID6 has one copy of the data, but it's possible to figure out what the data was by looking at what remains and using the parity data to figure out what was on the missing disk(s)

ZFS RAID levers aren't standard (they are very standard)

What is so difficult to understand about this statement?

@xrobau said in Changes at Sangoma:

@travisdh1 exactly! ZFS does not use parity. That seems to be where a bunch of this confusion is coming from.

Traditional RAID uses parity. ZFS uses copies.

FFS, what are you talking about? ZFS can use copies of data, but that's exactly what RAID1/10 is. Almost every reference I've seen on ZFS are with people using parity levels with it. ZFS is not magic, it still must calculate parity.

What you're claiming is that ZFS can do nothing but mirrored drives

@xrobau said in Changes at Sangoma:

• "ZFS Raid Levers aren't standard" - I have no idea what that means.

Neither do the people saying it, but we hear it said all the time.

@xrobau said in Changes at Sangoma:

So, as a Solaris administrator from way back, let's go through a couple of the misapprehensions about ZFS in that document you linked!

• ZFS Is an Alternative to RAID - Yes. It's a DIFFERENT TYPE of what normal people think of as 'RAID' - or specifically, RAID5/RAID6. They use Parity, and when a disk is broken/missing, it does calculations to figure out the missing data. ZFS uses copies of the data. Striping and Mirroring is obviously the same.

Uhm, what do you mean by "ZFS uses copies of the data" when talking about parity based arrays? This makes zero sense, as no matter what special sauce the array is using, it still must do the parity calculations. Unless it's really running a RAID 1/10 as another layer on arrays.

@Kyle said in What Are You Doing Right Now:

Trying to contain Ransomware RYUK @ a soon to be client site.

That's what I was dealing with this week as well. Make sure anything that doesn't seem infected doesn't have another dropper on it.

@Oksana said in Enable Azure File Sync from Windows Admin Center:

Sherlock Holmes thought of the human brain as a crowded attic, where useful knowledge may simply get lost. Well, thanks to Azure File Sync, your IT environment won't suffer the same fate. Find out how to synchronize data between file servers and Azure with this service. You can also enable tiering between file servers and Azure File Sync!

Read the article by Romain Serre, a Microsoft Expert, to find out how to enable Azure File Sync from Windows Admin Center.

What a bunch of marketing.... How, exactly, is file sync supposed to help people keep organized?

@NashBrydges said in Cisco Security Vulnerability Thread.:

https://www.businesswire.com/news/home/20190513005742/en/Red-Balloon-Security-Discovers-Critical-Vulnerability-Millions

Thanks for posting. Saw this headline, but didn't get to actually read the article yet.

Wondering how I'm every going to catch up here after being mostly absent since Sunday, and going to be busier than a 1 arm man going bankrupt at a casino through this weekend.

@WrCombs said in What Are You Doing Right Now:

@Obsolesce said in What Are You Doing Right Now:

@LilAng said in What Are You Doing Right Now:

@WrCombs said in What Are You Doing Right Now:

@LilAng said in What Are You Doing Right Now:

Literally everyone on here.

Ha. Just wait until you use the wrong word for something.
You aint seen nothing yet.

LMAO

Don't say pizza box.

what's wrong with saying pizza box?

Almost everyone confuses pizza boxes.

Pizza box!

Now I want a snack, go figure.

@Curtis said in MailCow in Production Datacenter:

@scottalanmiller said in MailCow in Production Datacenter:

(especially with Docker which seems to make the distro matter so much more than normal.)

Isn't one of the major selling point of Docker platform Independence? You can run it on any distro, even Windows?

That's what everyone says about it, but that's not been anyone's experience with it. Docker uses a shared kernel, so if you are using a different distribution or even just a different version of the same distribution as the developers, things randomly break.

@DustinB3403 said in I can't even:

@travisdh1 said in I can't even:

For my I can't even for Monday morning. Went to restore a VM, found that whoever setup the backups selected very few directories to backup. Never added the VM as a client for the Backup Exec software being used either. So now we have no backup at all of said server, which currently has the Ryuk ransomware. Happy Monday morning folks!

I guess it's time to say the "Your lack of planning is not my emergency" and walk away as this "can't be fixed" and isn't in your court today.

That's basically what was decided for that particular server, yep.

For my I can't even for Monday morning. Went to restore a VM, found that whoever setup the backups selected very few directories to backup. Never added the VM as a client for the Backup Exec software being used either. So now we have no backup at all of said server, which currently has the Ryuk ransomware. Happy Monday morning folks!

@WrCombs said in Windows 10 Startup:

I found it!
Mother F**Kers man i tell 'ya
Someone disabled it from the task manager>startup .
then told me they checked it !

They checked it all right

@EddieJennings said in What Are You Doing Right Now:

@travisdh1 said in What Are You Doing Right Now:

2008!

pfft. Wimp! 2003's the only way to go!

How about SBS2003?

@Obsolesce said in What Are You Doing Right Now:

@travisdh1 said in What Are You Doing Right Now:

Ryuk ransomware at a client. They have DFS going to all locations, so looking like a full wipe and restore.

WTF, people are still getting that? There's been countless guides on preventing it, mostly for Windows Server too!

Also, running ancient versions of Windows Server as one of the AD controllers for some reason. 2008!

@NetworkNerd I like Cloudflare to use the encrypted DNS channels. I know Google offers the same thing, but would rather use Cloudflare.

I haven't had any issues with the Cloudflare DNS service.

@Obsolesce said in What Are You Doing Right Now:

@travisdh1 said in What Are You Doing Right Now:

Ryuk ransomware at a client. They have DFS going to all locations, so looking like a full wipe and restore.

WTF, people are still getting that? There's been countless guides on preventing it, mostly for Windows Server too!

Preaching to the quire here my man. If it were up to me, we'd have all temp and internet cache locations set to not allow programs to run unless white listed. Probably would've saved an entire weekend worth of work for a whole bunch of us.

Ryuk ransomware at a client. They have DFS going to all locations, so looking like a full wipe and restore.

It's been a number of years now, but https://viviotech.net/windows-vps-hosting.html did a good job when I was supporting companies on their Windows platform.

@connorsoliver said in Overview of PC Memory - CompTIA A+ 220-901 220-902 Video Training by Prof. Messer:

How does DDR2 have a higher transfer rate than DDR if they have the same clock speed?

Instead of transferring a single piece of data with each clock tick, DDR2 sends data on both the uptick and downtick for each clock. This is vastly simpler to understand with a graph, but I don't have time to make even one of my bad drawings at the moment.

@dafyre said in MangoCon 2019:

@JaredBusch said in MangoCon 2019:

@travisdh1 said in MangoCon 2019:

@donaldlandru said in MangoCon 2019:

One of @JaredBusch

Of course JB would flip everyone off while drinking coffee.

I wasn't even trying...

It just comes natural.

It's what makes @JaredBusch, well, him.

@scottalanmiller said in Choosing KVM over Hyper-V....:

@brandon220 said in Choosing KVM over Hyper-V....:

I need to get a dedicated linux laptop. I could run Fedora as a VM but dedicated would be preferred.

That's just better in general

But virt-manager on Windows is still better than Hyper-V's tools.

Can't upvote this enough.

@donaldlandru said in MangoCon 2019:

One of @JaredBusch

Of course JB would flip everyone off while drinking coffee.

@DustinB3403 said in Suggestions to build a High-End Gaming PC:

@travisdh1 said in Suggestions to build a High-End Gaming PC:

and don't mind spending a lot of time doing?

A lot of time?

The real cost of building yourself.

Also, need more caffeine, can't even English properly.

@brianwinkelmann said in Suggestions to build a High-End Gaming PC:

I would like to ask you dear community to give me some suggestions for a High - End Gaming PC, you know, the best stuff of processor, motherboard, ram and the most important feature... the video card, I know that I can also google it, but I want to consider your valuable experience as IT community, also maybe different suggestions about building a PC, thank you so much.

How much are you wanting to spend?

Also, is putting the components together, installing the OS, drivers and games something you enjoy doing, and don't mind spending a lot of time doing?

@RojoLoco said in What Are You Doing Right Now:

@travisdh1 said in What Are You Doing Right Now:

@RojoLoco said in What Are You Doing Right Now:

@wirestyle22 said in What Are You Doing Right Now:

Grilled Cheese and Tomato Soup in the Winter

What is this winter you speak of? We didn't get any of that last year.

I can just imagine what Atlanta would be like if you actually got snow. Would be entertaining to watch for someone who lives in a section of Lake Erie snow belt.

Oh dude, it's totally fucked when we get an inch of flurries. If you could be here for that 48 hours of "winter", you'd die laughing.

2002-2004 I was an over the road truck driver, I got to watch that one year, it was hilarious. Had a cop put his lights on behind me, got on the CB with them. Was like, look, people, I'm from NE Ohio, this is the funniest overreaction to a nothing event I've ever seen. Now if you want to talk about 3 feet of snow, then I'll consider pulling this rig over.

@RojoLoco said in What Are You Doing Right Now:

@wirestyle22 said in What Are You Doing Right Now:

Grilled Cheese and Tomato Soup in the Winter

What is this winter you speak of? We didn't get any of that last year.

I can just imagine what Atlanta would be like if you actually got snow. Would be entertaining to watch for someone who lives in a section of Lake Erie snow belt.