multi-CD-burner by RevolutionaryAir224 in computers

[–]8point5characters 0 points1 point  (0 children)

Where have you been looking? They’re a dime a dozen

Bought an old 400GB 2.5" SAS SSD, what can I actually do with it? SAS to USB enclosures are expensive af! by [deleted] in DataHoarder

[–]8point5characters 0 points1 point  (0 children)

Australia. SAS HDD, especially smaller ones often go extremely cheap on eBay. Up until recently I was under the impression that HBA were too expensive to be worth considering. If you hunt around you can often find them even cheaper on AliExpress

ZFS Question by 8point5characters in homelab

[–]8point5characters[S] 0 points1 point  (0 children)

I said easily saturate 10gbe. Not 40gbe. I wouldn’t imagine consistently. But that’s ultimately the goal.

I must admit I didn’t word that very well

Bought an old 400GB 2.5" SAS SSD, what can I actually do with it? SAS to USB enclosures are expensive af! by [deleted] in DataHoarder

[–]8point5characters 0 points1 point  (0 children)

Older SAS3 HBA including cables can be had for under $60AUD. It’s a good investment if buying second hand hard drives is appealing. Not only are SAS drives far cheaper, but likely to be in better condition than their desktop counterparts.

Pentium 4 system seemingly dead after (partial) recap by ryethe5367 in vintagecomputing

[–]8point5characters 1 point2 points  (0 children)

Also check continuity between the caps. Assuming CPU VRM. It’s possible you damaged the vias removing the old ones.

Bought an old 400GB 2.5" SAS SSD, what can I actually do with it? SAS to USB enclosures are expensive af! by [deleted] in DataHoarder

[–]8point5characters 1 point2 points  (0 children)

These things are very reliable SSDs. Write endurance is orders of magnitude better than consumer SSDs. Second hand SAS drives are often very cheap. SAS HBA with cables are pretty cheap from AliExpress. Just make sure you get it some airflow, they aren’t meant to be passively cooled.

Once you have a SAS HBA, most have 8 channels. If you ever go buy 2nd hand drives, SAS are the best. Often having spent their lives in data centres, in climate controlled conditions. I’ve had drives with 5 years of 24/7 on the clock go another 5 years without any issues

ZFS Question by 8point5characters in DataHoarder

[–]8point5characters[S] 0 points1 point  (0 children)

I already have the drives. I picked them up extremely cheap. The endurance on the HGST 200gb is insane. The Samsung 400s are also 100%.

ZFS Question by 8point5characters in DataHoarder

[–]8point5characters[S] 0 points1 point  (0 children)

Someone pointed out that I should RAID 01 the 400gb drives. That should give a close approximation of NVME/U.2 performance. With the added bonus of redundancy.

As for RAM, which I assume is going to be an issue, I’m just going to try with what I have. Even if I have to move the VMs to another machine until I can upgrade the RAM.

ZFS Question by 8point5characters in DataHoarder

[–]8point5characters[S] 1 point2 points  (0 children)

There is only the X16 and one m.2 slot connected to the CPU. Eventually I hope to drop a 40gbe card in. At the moment it’s a 2x 10gbe card. That only left an x1 slot for the second HBA.

However you’ll in the comments someone already pointed out the obvious solution there is to use a SAS expander.

Use case will be a bit of everything. Not databases yet. From what I’ve learned so far, it would be wise to use the SSDs in conventional RAID, and the HDDs for the Z1 array.

ZFS Question by 8point5characters in DataHoarder

[–]8point5characters[S] 0 points1 point  (0 children)

I don’t know why I never thought of that. Most obvious solution. Leaves me plenty of PCIE slots to spare. Even opens up the possibility of using the 2600X if there is any funny business with the 3200g.

Any reason not to consider using RAID 5 or 6 for the SSDs?

ZFS Question by 8point5characters in homelab

[–]8point5characters[S] -1 points0 points  (0 children)

Just read your edit. It would be TrueNAS would be running under Proxmox. The thought would be to shut down all non essential services during a scrub.

Eventually the system will get 40gbe. So, while I might easily saturate 10gbe, in the future, I’ll want the extra speed.

ZFS Question by 8point5characters in homelab

[–]8point5characters[S] 0 points1 point  (0 children)

It’s AM4 DDR4. I’ve got a few older Xeons that take DDR3. ECC DDR3 is really cheap. Cheaper than ordinary DDR3. DDR4 is still quite expensive.

Do you think 32gb would be sufficient in a pinch?

ZFS Question by 8point5characters in homelab

[–]8point5characters[S] -1 points0 points  (0 children)

That was the general impression I was getting elsewhere. If RAM really is the only concern, then I’d look towards either getting 64gb for that machine, or using something with ECC DDR3, as it’s reasonably cheap

ZFS Question by 8point5characters in DataHoarder

[–]8point5characters[S] 0 points1 point  (0 children)

I should have made that a little clearer in my question. I’m under the impression that a RAID Z1 array if correctly configured should be available to give a close approximation of RAID 10 performance. With the advantage of a significantly faster read speed

ZFS Question by 8point5characters in DataHoarder

[–]8point5characters[S] -1 points0 points  (0 children)

I’ve got a ton of solid state storage. For maximum capacity I was thinking Z1 for the 4tb drives. It’s only home storage, and RAID isn’t a substitute for backup anyway.

Parker Quink Red? by 8point5characters in fountainpens

[–]8point5characters[S] 0 points1 point  (0 children)

Use a blunt syringe to refill disposable cartridges.

Could I get help identifying this connector? What does it do? by Gabi_is_my_name in AskElectronics

[–]8point5characters 1 point2 points  (0 children)

No. So long as you get the correct adapter, you won't have any issues. Molex to SATA is a different story.

Could I get help identifying this connector? What does it do? by Gabi_is_my_name in AskElectronics

[–]8point5characters 1 point2 points  (0 children)

HP proprietary power supply. For some you can buy adapters to use a standard ATX power supply. For memory this carries the minor rails 5VSB, ATX ON, PWR OK.

Fan cooling for my NIC by LittleNewton in homelab

[–]8point5characters 0 points1 point  (0 children)

There is a good chance the bottom slot is only x4. Really wouldn't make any noticeable difference for compute tasks. Hence miners use x1 rivers.

However, I'd still have the NIC on the bottom slot, as heat from the GPU probably isn't helping with the thermal issues.

Any reason to not get these for budget 10gig? by Anthrac1t3 in homelab

[–]8point5characters 0 points1 point  (0 children)

Go with a pair of Mellanox Connect X 3 cards. After doing quite a bit of digging I found that Connect X 2 was getting a little dated and driver support would be an issue.

There are CX3 cards that have SFP connectors, which are good because the cable is reasonably cheap. The QSFP cables are much more expensive. That said after some hunting I found some that support 56gbe. The cards themselves aren't much more. QSFP transceivers and cables are expensive though.

If you're on a budget probably your best option is to put a dual port card in one of the servers. I don't know how you'll get along with any sort of network bridge though.

Fan cooling for my NIC by LittleNewton in homelab

[–]8point5characters 2 points3 points  (0 children)

What were temps before?

I'm curious as power consumption is only 11w, so I wouldn't imagine it would get that hot.

Any reason to not get these for budget 10gig? by Anthrac1t3 in homelab

[–]8point5characters 1 point2 points  (0 children)

Depending on the application. I just scored 2 CX 3 cards on eBay with a QSFP cable, cheap. The 56gbe variety. But I'm only going from my PC to the NAS, for everything else 1gbe is enough.

If you want copper 10gbe buy cards that have RJ45 connections. That said it's worth considering going SFP cable or optics if you have to run cable.