lemann

joined 2 years ago
[–] lemann@lemmy.one 1 points 1 year ago* (last edited 1 year ago)

Dang, that thing is the bees knees!

Would make more sense to replace just the batteries rather than the whole unit IMO. Looks like it takes standard 12v 7Ah sealed lead acid batteries, so should be doable for under $120 (if you buy them individually and use the existing battery harness)

I have three other UPSes, but none of them are as good as yours lol:

  • APC SUA1500RM2U - was a great online rackmount unit, stopped using this a few years back because of its tendency to overcharge batteries without a charge controller ADC calibration mod. It wrecked my last battery pack bad 😭 plan to convert it to LiFePo4 and put it back into service 🀞
  • Zigor Ebro - cheap and cheerful line-interactive UPS for the modem, network switch and CCTV cameras. Switchover time is pretty much instantaneous, worth every cent paid and has kept my network up through many outages
  • Cyberpower UT650 - A temporary offline UPS to hold the server gear specifically until I get the APC back in service. Honestly not worth the cheap price, the switchover delay is long enough to shut off anything that's not a server PSU with massive bulk capacitors

Edit: fix bullet list formatting

[–] lemann@lemmy.one 9 points 1 year ago

Adobe is the one company i'd never, ever, ever want to support, especially with a subscription. πŸ΄β€β˜ οΈ all day every day

[–] lemann@lemmy.one 26 points 1 year ago (7 children)

Flash drive hidden under the carpet and connected via a USB extension, holding the decryption keys - threat model is a robber making off with the hard drives and gear, where the data just needs to be useless or inaccessible to others.

There's a script in the initramfs which looks for the flash drive, and passes the decryption key on it to cryptsetup, which then kicks off the rest of the boot mounting the filesystems underneath the luks

I could technically remove the flash drive after boot as the system is on a UPS, but I like the ability to reboot remotely without too much hassle.

What I'd like to do in future would be to implement something more robust with a hardware device requiring 2FA. I'm not familiar with low level hardware security at all though, so the current setup will do fine for the time being!

[–] lemann@lemmy.one 4 points 1 year ago (2 children)

I'm in the same boat as @shnizmuffin@lemmy.inbutts.lol, lab has been nice and stable and have nothing to contribute as of yet.

At the beginning of the migration I was popping in and out of r/homelab, but as it stands now I haven't visited there in ages!

[–] lemann@lemmy.one -1 points 1 year ago

The room might stink, but nobody intentionally shat on the floor.

I like this figure of speech a lot, stealing it 😁

[–] lemann@lemmy.one 3 points 1 year ago (3 children)

What's your problem with tagginator? Just block it if you don't want to see it?

[–] lemann@lemmy.one 0 points 1 year ago (1 children)

Anybody crashing a Cybertruck at highway speeds into one of those is instantly turned into red colored mashed potatoes

Why does that sound delicious 😭

[–] lemann@lemmy.one 4 points 1 year ago (1 children)

BTRFS has encryption now? Yay!! I have been wrapping it inside a LUKS partition for years at this point...

[–] lemann@lemmy.one 8 points 1 year ago

Holy moly that is an absolute sh*t ton of ads!

[–] lemann@lemmy.one 4 points 1 year ago (2 children)

Because it's from china doesn't mean anything though lol. So are our phones, clothes, bikes, car electronics, batteries, practically all electronics except hard drives etc.

Don't forget that there are talented individuals everywhere, regardless of whatever perceptions exist about their country of origin.

In this case, OP wants access to what they consider to be a good show, and that's that πŸ€·β€β™‚οΈπŸ΄β€β˜ οΈ

 

What do you think of dual actuator hard drives? I never knew these even existed...

Here's a quick summary of the vid for those who want a TL;DW:

  • Dual actuator drives are a single drive with two actuator arms inside
  • These arms have their own platters, each with access to half of the drive's capacity
  • The SAS version shows up as two separate drives: one for each actuator
  • The SATA version shows up as a single drive, however can be partitioned at a specific LBA near the middle to use both actuators independently
  • Linux kernel updated to support these drives better when queuing commands
  • Capable of saturating a 5gbit SATA link

Personally, my concern is RAID setups, particularly in a SAS config. Will filesystems like ZFS and BTRFS know that two storage devices are the same physical drive... aside from that, and concern about more mechanical parts, this looks exciting especially for sequential speed throughput!

EDIT: fix typos

view more: next β€Ί