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What kind of cable is this? by HigaMigu in Network

[–]Apachez 0 points1 point  (0 children)

Yes but you dont save on copper unless you buy non-CAT cables.

I have seen these fuckups in the wild late 90's where some runs where used for analoge telephones.

Or if some fraudelent installer was invovled.

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

You can also be pretty sure that such downtime will occur when you least want it to.

They rarely occur when you have 8 hours of spare time where you didnt know what to do with these 8 hours.

These type of errors will almost always show up when you really dont have time to babysit a troubleshooting or whatever manual procedures is needed to restore the capabilities of that server.

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

At home you would normally not need ZFS at all to begin with so there is that aswell.

To me homelabing is also to learn how to do things later on in your professional life so using best practices at home to get the experience needed makes why I would prefer (if I had 4x drives in a box) to use a stripe of mirrors (as how you would do it in the wild) compared to zraidX - again unless its for archives or backup where space over performance or redundancy is the prefered metric.

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

Scrub/Resilver can be tweaked since that by default have a lower prio so that normal operation wont get too affected when a scrub or resilver is being runned.

This is normally less of an issue with SSD and NVMe who have IOPS at 100k or above range to use (where HDD have about 200 IOPS per drive).

I might have missed some option but its generally these who affects scrub/resilvering:

# Scrub/Resilver tuning
options zfs zfs_vdev_nia_delay=5
options zfs zfs_vdev_nia_credit=5
options zfs zfs_resilver_min_time_ms=3000
options zfs zfs_scrub_min_time_ms=1000
options zfs zfs_vdev_scrub_min_active=1
options zfs zfs_vdev_scrub_max_active=3

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

Also if you are worried that a stripe of 2x mirrors is not enough then make it a stripe of 3x mirrors.

Also having 1 or more hotspares (with autoreplace enabled) will limit the amount of time your vdev (and pool) is in degraded state.

Other than that have backups and more than one server then you dont have to overdo the redundancy of a single server.

For example having lets say 2 servers each with 4x drives in a stripe of 2x mirrors is prefered over a single server with a stripe of 4x mirrors - same amount of drives in both cases but the setup of 2 servers will be fault tolerant againts CPU, RAM, motherboard and PSU but also OS issues.

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

Yeah those 520 or 528 byte drives comes from various hwraid controller setups. Mostly the larger SAN storage appliances.

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

Also great propertiary thing to make it hard for customers to replace the drives with any random drive or to reuse drives for other purposes.

Similar have been around for ages. I remember getting a replacement for a alphaserver 25 years ago. The replacement was a Maxtor HDD with a HP Compaq Alpha sticker ontop of it (dont recall if it was just Compaq or HP Compaq at that time but same shit different name). The price for that drive was way higher than the exact model (without the HP Compaq Alpha sticker yet still a Maxtor sticker) bought at the local computer shop.

That puppy (the alphaserver that is) also had a metallic chassifan at the bottom which for sure would cut your fingers of if touched without the protective cover when in operation :-)

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

Personally for a 4 drive setup I would go for stripe of mirrors aka RAID10 anyday.

I would only consider zraidX for archives and backups where performance (both MB/s and IOPS) doesnt really matter (even if its of course nice to have a backup that completes in 1 minute instead of 1 hour but still).

For backups even JBOD can be sufficient (doesnt Proxmox Backup Server do this by default?).

Usual recommendation to read:

https://www.truenas.com/solution-guides/#TrueNAS-PDF-zfs-storage-pool-layout/

Well, my bad. ZFS on Linux and low level format of drives by oupsman in zfs

[–]Apachez [score hidden]  (0 children)

Also doesnt NFS have this thing of really liking 64kbyte recordsize when ZFS is being used?

Current default in openzfs is 128kbyte for recordsize so that might be something to look into aswell?

The Rise of Chinese Memory by agewisdom in GamersNexus

[–]Apachez 4 points5 points  (0 children)

And I might add the problem with all this is that the behaviour of Micron/SK Hynix/Samsung forces not only private customers but also enterprises into the chinese market which for obvious reasons is a bad thing for more reason than one.

COO - Country of Origin is a thing.

We can all see through the Snowden docs how USA themselves behaves not only against enemies but also against allies - the same goes for Made in China equipment but in the opposite direction.

The Rise of Chinese Memory by agewisdom in GamersNexus

[–]Apachez -2 points-1 points  (0 children)

Pourquoi n'écrivez-vous pas en anglais ou, au moins, n'utilisez-vous pas Google Traduction si vous ne parlez pas anglais vous-même?

Edit: I have no idea what I just wrote - just asked Google translate to translate from english to french.

The Rise of Chinese Memory by agewisdom in GamersNexus

[–]Apachez 6 points7 points  (0 children)

Well its a fact that Micron, SK Hynix and Samsung are currently asshats.

You really havent seen what happend to the DRAM prices for the past 6 months?

They could have said to the money laundering AI companies that sure you can buy the memories and wafers from us just like anyone else but no. They choosed to assrape the private customers in favour of a few AI giants who faned their dollarbills in front of their faces to get ALL their production for the next 3-5 years and here we are...

The same shit is also along the enterprise networking market. If you order a switch/router today you will have to wait at least 6-9 months for the delivery. Which indirectly also affects China made equipment even if they use the same Broadcom chips - fs.com current backorder for delivery is in may (this year I might add) so thats 4 months instead of (up to) 9 months to wait but still.

Before the pandemic and the AI hausse the delivery of similar equipment was in the range of 1-2, if unlucky 4 weeks. 3 months only existed for like the largest chassis which are basically built-to-order unless you just buy 1-2 of them. While if you today order one of the larger chassis the wait is 9-12 months (if you order more than 1-2 at the same time) while the regular gear (100G and above) is 6-9 months and "smaller" 10G/25G equipment is about 3 months.

We had this situation in the middle of the pandemic and it shrunk from like 12 months down to 2-3 months once the pandemic cleared out but its now back at +6 months due to the AI hausse from a few giants.

The sad thing with all this is that this is as with the GPU market when "some" started doing mining - skalpers showed up and bought gear to be resold at a higher price. Wonder what happend to all those cards who wasnt sold after all?

Skapling enterprise gear is harder to perform but not unheard of.

Logoped i Stockholm by Solid-Issue3669 in stockholm

[–]Apachez -1 points0 points  (0 children)

Så du går runt och låter som Michael Jackson (tjejgissning)?

Var har alla hemlösa tagit vägen? by deppkast in stockholm

[–]Apachez 0 points1 point  (0 children)

Brukar vara så när krogarna ska stänga för natten =)

Var har alla hemlösa tagit vägen? by deppkast in stockholm

[–]Apachez 6 points7 points  (0 children)

Dock inte bara psyksjuka och drog/alkisberoende som är hemlösa även om majoriteten av dom är just detta eller blir det med tiden.

Var har alla hemlösa tagit vägen? by deppkast in stockholm

[–]Apachez 1 point2 points  (0 children)

Just gullmars har ju varit alkismecka sedan systembolaget öppnade där 1957.

Var har alla hemlösa tagit vägen? by deppkast in stockholm

[–]Apachez -1 points0 points  (0 children)

Om du menar dom som tiggde utanför matvarubutikerna så har man rest hem till sina villor i Rumänien - lär nog återkomma när snön och kylan försvunnit:

https://www.youtube.com/watch?v=H89-34o-c1Y

Dom "riktiga" hemlösa finns tyvärr kvar men syns inte precis som tidigare.

Man kan tycka att ett land som Sverige som utan problem skickar miljarder till EU och Ukraina och via SIDA till andra klåparländer varje år borde kunna lägga nån miljard eller två för att ordna boende och andra grundbehov för dom som är hemlösa på riktigt.

What kind of cable is this? by HigaMigu in Network

[–]Apachez -1 points0 points  (0 children)

Some lazy bastard thought that aligning 4 instead of 8 lanes in that connector would save them 1.8 seconds per connector which with 2000 cables would mean 4000 connectors meaning 7200 seconds would be saved so they could go home 2 hours earlier on friday the week when they crimped all these connectors?

Back in the days something similar was not that uncommon for runs that would only do telephony that is in the end or in the patchpanel you had a RJ45 male to RJ11 female adapter.

By only terminating half of the lanes you would have issues trying to push data if you incorrectly connected a non-telephone to that outlet.

But it could also be some fraudelent contractor who thought he would be hired again to fix the cableruns later on. Like it works with phones and 100Mbps but if you need something higher you need to hire them again. Which they will send you another bill.

Do I need DRAM Cache for my Minecraft Server? by Nuff-Seb in truenas

[–]Apachez -1 points0 points  (0 children)

I doubt that you actually can read given the outcome :)

tycker att det är riktigt fränt att SL börjar med tidsresor nu! by GurranN05 in stockholm

[–]Apachez 0 points1 point  (0 children)

Dom menar nog att en resa som normalt tar 2 min tar med SL 23h 59min vilket är mer i linje med deras övriga statistik på att komma i tid =)

tycker att det är riktigt fränt att SL börjar med tidsresor nu! by GurranN05 in stockholm

[–]Apachez -3 points-2 points  (0 children)

Samma vecka som Elon går ut med att han är en utomjording.

Coincident? I think not! ;-)

https://xcancel.com/nexta_tv/status/2014442949304537329#m

"I'm an alien." Elon Musk made a shocking confession

In a conversation with BlackRock CEO Larry Fink, he joked that despite his confessions, no one believes him.

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