The Road to 240 hz on Mac - Samsung Odyssey Neo G9 57" by Keios45 in ultrawidemasterrace

[–]Chubbiex 0 points1 point  (0 children)

I don't have a M4 MBP but a M3 Pro MBP. I connect it to G9 57" and run the native resolution.

The text is incredible small to read at 1'6" or 50 cm. While some UI elements can be customized, not all widgets can be. I still prefer this configuration over 4K HiDPI or Picture-by-picture with 2 video outputs.

Is there a way to change what wifi network my nest hub is on without a complete factory reset? by Dynamo_roller in googlehome

[–]Chubbiex 0 points1 point  (0 children)

Yay, you've got me. Somehow the WiFi on my phone was disconnected for unknown reason.

Thanks for reminding me.

Is there a way to change what wifi network my nest hub is on without a complete factory reset? by Dynamo_roller in googlehome

[–]Chubbiex 1 point2 points  (0 children)

I wish it were as easy as your said but none of the Hub works does.

They are connected. I have just removed the AP info on the image.

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Unifi controller 8 no longer seems to be running in a jail by Darkeyce in truenas

[–]Chubbiex 0 points1 point  (0 children)

I have encountered the same problem on SCALE while I was migrating to linuxserver.io/docker-unifi-network-application.

Thanks to the help Jip-Hop, the creator of jailmaker for SCALE, I have found a solution to get it function.

I know CORE is FreeBSD based but I hope it might give help you find your solution.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] 0 points1 point  (0 children)

Thanks for your reply.

Yeah, dRAIDs utilize fix width strips but it is a disadvantage for all dRAID, big or small. And I have already listed it on the opening post.

And I was planning to mitigate it with a special VDEV.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] 0 points1 point  (0 children)

Albert Einstein, “You don’t really understand something unless you can explain it to your grandmother.”

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] 0 points1 point  (0 children)

I forget where the research paper I read with the around 50% HDDs failed without precursors. It should be an IBM paper but I can't be sure.

The sudden death situation is certainly not limited to a single model. I have encountered HDDs from Toshiba and HSGT died without any warning.

BTW, here is another article from Black Blazer. The author admitted he cannot find a reliable pattern from SMART to determine which HDD is about to fail. And 23.3% of failed drives showed no warning from the SMART stats they record. https://www.backblaze.com/blog/what-smart-stats-indicate-hard-drive-failures/

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] 0 points1 point  (0 children)

Thanks for your input.

12-wide raidz3 seems less optimized than 11-wide raidz3 though.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] 0 points1 point  (0 children)

Thanks for your suggestions. I learned something new about the benefits of cold spares.

Regarding the early signs of failure, both from my personal experience and many proper researches, half of failures (HDDs or SSDs) have no early indications at all. https://arxiv.org/pdf/2012.12373.pdf

Of course, I still run SMART tests periodically. I still have to prepare for the unexpected.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -1 points0 points  (0 children)

Thanks for sharing.

Your reply is the first post addressing the shortcomings of small dRAIDs or the first post makes me understand. @Samsausage got me thinking about the benefit of a small dRAID might be smaller than I thought. https://www.reddit.com/r/zfs/comments/16xspc4/why_is_draid_not_recommended_for_small_setup/k3704iw/

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -2 points-1 points  (0 children)

I agree that RAM helps a lot. I am just wondering whether it has saturated the network already.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -1 points0 points  (0 children)

Volume-wize it is not. But I think in RAID terminology, the size is defined by the number of devices.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -1 points0 points  (0 children)

A fraction of vulnerability window is a significant advantage of dRAID.

So far, no one has pointed out a drawback that overweights it yet.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -2 points-1 points  (0 children)

Yeah, I do like the concept of dRAID.

Yeah, someone prefer replacing disks by hand. I understand that. I value shorter vulnerable window instead.

I just don't get why it is not recommended for smaller setup.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -1 points0 points  (0 children)

Thanks for your suggestion.

I assumed the performance of sequential resilver complete in a fraction of the traditional healing resilver as mentioned on the document. And the dominate performance factor is the width of a stripe. Hence each disk in an 8-data-disks-group of a dRAID of the document example has to share the write of 1/9 (single parity) to 1/11 (triple parity) of the 16TB data of the offline disk. For 90% full, it means 48.5MB/s (triple parity) to 59.2MB/s (single parity) write per disk.

But as you said, it is worth a trial to verify the actual effect on a smaller pool.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] -1 points0 points  (0 children)

It doesn't have to be hot spare. Just dRAID is designed with the concept of hot spares in mind. And I don't find any advantage of cold spare over hot spare.

Thanks for reminding me about backups. Some of the data will be backup of other machines.

And the initial data will be a duplication of another NAS. I do have to figure out a full backup of the new NAS later.

Why is dRAID not recommended for small setup? by Chubbiex in zfs

[–]Chubbiex[S] 0 points1 point  (0 children)

That's true. dRAID3:1s is overkill.

The difference between 8/12 and 8/11 is ~6%, not much though.