I wouldn’t worry about the battery. Any potential harm comes in before it gets to the battery, and there’s likely a DC-DC converter before that anyway.

The first thing to validate is the listed specs. If your laptop expects 12v (usually listed on a sticker on the device), don’t connect a 19v brick. Same for center-positive/center-negative. USB-C bypasses all of that, since it negotiates a matching spec before charging.

The second thing is how well it adheres to the specs it lists. This isn’t something that you can really test yourself. It would require a lot of specialized equipment and skills, since the answer can change in different circumstances. It might work fine for a while, but eventually deliver rich, chunky volts. This will (likely) fry the motherboard, and maybe more than that. USB-C does NOT bypass this. Some of the worst chargers on the market are USB-C.

The only realistic way to avoid the second is to get a quality charger from a trustworthy source. Many will only recommend OEM, but you also have to be careful about counterfeits on eBay or scAmazon. You can use aftermarket, but only if it’s a trustworthy brand like Anker.

This is highly dependent on what your needs are and how you plan to solve it. SATA-3 maxes at 6gbit, which SAS-2 had in 2009. Most cards are x8, and have at least 4 full speed SAS lanes (of whatever generation). That means 24 Gbit. PCIe x8 2.0 (from 2007) had 4 GB (32 Gbit). So if that meets your needs, you can run it on an ancient board.

However, if you need something more advanced, such as SAS-3, a SAS expander, or a card with more native lanes, then you would need to plan accordingly.

I’ve been running on an LSI 9211-4i4e, which is only a PCIe 2.0 card, for many years. I did notice my speeds dropped when I expanded the 4e to a 15-bay DAS (plus the 4 internal SATA drives), but it’s still enough to meet my needs.

It’s not really about 24/7, but it is about quality of components. Enterprise gear is made using slightly better parts and tighter tolerances. Things like more expensive capacitors rated for more hours/cycles, better power filters, things like that.

The end result (and this is easily verified) is the failure rate is much, much lower than comparable consumer-grade equipment.

There is sometimes a blurry line between what counts as enterprise vs pro-sumer vs consumer gear, though.

If you can use SAS (you’ll need a SAS PCIe card, roughly $50 used), get SAS drives. They are enterprise-grade exclusively, there is a massive supply of used drives as servers get refreshed, and a very limited secondhand market because most people can’t use SAS drives.

You won’t get the latest or largest drives, but you’ll get something that works perfectly fine for home use.

I recommend against Go Hard Drives. They get drives that previously failed but currently test ok, then wipe the SMART data. I had a whopping 133% failure rate (all 3 original, plus 1 replacement) before I returned the whole thing.

If you insist on using them, do the most extensive burn-in testing you possibly can. I would use at least a full week, to make sure it’s actually (semi-) reliable.

In my experience, nope. Assuming it works as promised, the situation (usually) gets viewed as a skill gap. You think their code is bad, because you don’t understand it well enough. Unless you are personally willing to redevelop it, of course.

How accessible are those components? How accessible are they for you? Most laptops these days require some specialized opening tools and a lot of care. It may not be something you can reasonably do on your own.

In either case, as of right now, I’d say buy on both. Later upgrades are not going to be cheap for a while.

Kind of. They will be multiples of 4. Let’s say you got a gigantic 8i8e card, albeit unlikely. That would (probably) have 2 internal and 2 external SAS connectors. Your standard breakout cables will split each one into 4 SATA cables (up to 16 SATA ports if you used all 4 SAS ports and breakout cables), each running at full (SAS) speed.

But what if you were running an enterprise file server with a hundred drives, as many of these once were? You can’t cram dozens of these cards into a server, there aren’t enough PCIe slots/lanes. Well, there are SAS expansion cards, which basically act as a splitter. They will share those 4 lanes, potentially creating a bottleneck. But this is where SAS and SATA speeds differ- these are SAS lanes, which are (probably) double what SATA can do. So with expanders, you could attach 8 SATA drives to every 4 SAS lanes and still run at full speed. And if you need capacity more than speed, expanders allow you to split those 4 lanes to 24 drives. These are typically built into the drive backplane/DAS.

As for the fan, just about anything will do. The chip/heatsink gets hot, but is limited to the ~75 watts provided by the PCIe bus. I just have an old 80 or 90mm fan pointing at it.

The one I had would frequently drop the drives, wreaking havoc on my (software) RAID5. I later found out that it was splitting 2 ports into 4 in a way that completely broke spec.

I don’t want to speak to your specific use case, as it’s outside of my wheelhouse. My main point was that SATA cards are a problem.

As for LSi SAS cards, there’s a lot of details that probably don’t (but could) matter to you. PCIe generation, connectors, lanes, etc. There are threads on various other homelab forums, truenas, unraid, etc. Some models (like the 9212-4i4e, meaning it has 4 internal and 4 external lanes) have native SATA ports that are convenient, but most will have a SAS connector or two. You’d need a matching (forward) breakout cable to connect to SATA. Note that there are several common connectors, with internal and external versions of each.

You can use the external connectors (e.g. SFF-8088) as long as you have a matching (e.g. SFF-8088 SAS-SATA) breakout cable, and are willing to route the cable accordingly. Internal connectors are simpler, but might be in lower supply.

If you just need a simple controller card to handle a few drives without major speed concerns, and it will not be the boot drive, here are the things you need to watch for:

• MUST be LSi, but it can be rebranded LSi. This includes certain cards from Dell and IBM, but not all.
• Must support Initiator Target (IT) mode. The alternative is Initiator RAID (IR) mode. This is nearly all, since most can be flashed to IT mode regardless
• Watch for counterfeits! There are a bunch of these out there. My best advice is to find IT recyclers on eBay. These cards are a dime a dozen in old, decommissioned servers. They’re eager to sell them to whomever wants them.

Also, make sure you can point a fan at it. They’re designed for rackmount server chassis, so desktop-style cases don’t usually have the airflow needed.

To anyone reading, do NOT get a PCIe SATA card. Everything on the market is absolute crap that will make your life miserable.

Instead, get a used PCIe SAS card, preferably based on LSi. These should run about $50, and you may (depending on the model) need a $20 cable to connect it to SATA devices.

I did this back in the days of Smoothwall, ~20 years ago. I used an old, dedicated PC, with 2 PCI NICs.

It was complicated, and took a long time to setup properly. It was loud and used a lot of power, and didn’t give me much beyond the standard $50 routers of the day (and is easily eclipsed by the standard $80 routers of today). But it ran reliably for a number of years without any interaction.

I also didn’t learn anything useful that I could ever apply to something else, so ended up just being a waste of time. 2/10, spend your time on something more useful.

It won’t officially work, but it’s not too hard to get it going. I just moved a similar box to 24H2 LTSC.

OP, you’ll probably need to run “setup.exe /product server”, or follow a recent guide. You’ll also need to do this for every major upgrade (i.e. yearly)

I agree though with the plan to use this as a test ground. I also recently upgraded a Lubuntu system to similar specs, and it runs pretty smoothly. But learning Linux takes a lot of time they don’t have.

The big caveat is that the BIOS must allow it, and most released versions do not.

What is your use case? I ask because ESXi is free again, but it’s probably not a useful skill to learn these days. At least not as much as the competition.

Similarly, 2.5" mechanical drives only make sense for certain use cases. Otherwise I’d get SSDS or a 3.5" DAS.

Thinkpads are extremely well documented. For how to repair/replace parts, you need the HMM. Just Google for “Thinkpad t14 Gen 1 HMM” and you should find the official PDF on their site. That will tell you, step by step, how to replace the keyboard.

As for the part itself, you can again check Lenovo’s site for all compatible parts (FRUs) and find the item number and details. While I wouldn’t recommend buying directly from them due to cost, this should give you the information needed to find it elsewhere. eBay has tons of Thinkpads being sold for parts, and many of these will be parted out. You should have no issues finding what you’re looking for.

They all have to work (at least to an extent) using only x1. It’s part of the PCIe spec.

Missing pins are actually extremely common. If your board has a slot that’s x16 (electrically x8), which is very common for a second video card, take a closer look. Half the pins in the slot aren’t connected. It has the full slot to make you feel better about it, and it provides some mounting stability, but it’s electrically the same as an x8 that’s open.

USB the protocol, or just uses a USB cable? If it’s not using the protocol, the cables are a cheap way of getting cables of a certain spec.

This entire conversation is solving a problem that’s already been mostly solved.

If you don’t like an existing community, whether because of the mods or whatever, you just create a new one. This was common on Reddit (e.g. GameOfThrones vs FreeFolk vs ASOIAF), and extends further. If you don’t like !Linux@lemmy.world, you can create !Linux@lemmy.ml, @programming.dev, @lemm.ee, or hundreds of others.

The community will respond accordingly. If you run a better ship, people will find it and respond accordingly. The only real hurdle is fighting inertia. The mods of the existing community will probably not take kindly to anyone mentioning any alternatives.

Also, be sure to run extensive burn in tests before deploying for production use. I had an entire batch from GoHardDrive fail on me during that testing, so my data was never in danger.