Hopfgeist

Thanks.

Thanks. Right now I'm away from the machine so can't look, but I'll keep an eye open for a T420 mainboard and a second CPU, then. It'll still be a decent machine, I think, with two E5-2470 V2. DDR3 ECC-RAM is also dirt cheap these days.

Clearly you neither read my post nor looked into what the air baffle in the T320 actually looks like. So whats your point?

It's much more than a fan shroud. It's a baffle specifically designed to guide cooling air over the CPU heatsinks and the RAM modules. This kind of airflow design is very common in servers. I wouldn't trust it without, especially since the CPU heatsinks have no dedicated fans, but rely on the aerodynamic functioning of the baffle.

And yes, I know they are very similar, in fact I am quite (but not absolutely) certain that they are identical except for the actual second CPU socket. It's almost as if you didn't read my post. Even the soldering points for the second CPU socket are there in the single-CPU T320. They certainly won't have different PSU connectors. They even share part numbers for the case.

I'd have to check the baffle shape again. But thanks for the insight.

I don't think there's anything intrinsically wrong, but far as I can see you are using only a single disk for the zfs pool, which will give you integrity checks (know when something is corrupted), but no way to fix it.

Since this is, by today's standards, a tiny disk at 100G, I assume this is just a test setup? I'm not sure zfs is particularly well suited for virtual machines, I think it is better to have the host handle the physical data integrity by having the disk image on a zfs filesystem, or giving the VM a zfs volume (block device) directly.

~~Mig~~Su-24 bombers

There's no such thing as a MiG-24. (MiG has only ever used odd-numbered model designations, though I don't know why. But it's one of the reasons why it was a safe bet for Top Gun to use "MiG-28", being sure not to refer to any real aircraft, past, present or (probably) future.

I use the names of chemical elements, but with two twists: I assign them in the order in which they appear in the song "The Elements" by Tom Lehrer, and I use the German names. So I have (or had), among others, Wasserstoff, Sauerstoff, Stickstoff, etc ...

Same here. It just says "nginx has been successfully installed" or something like that. It serves the appropriate directories or redirects to the respective virtual machines for other (sub) domains.

What are the advantages of raid10 over zfs raidz2? It requires more disk space per usable space as soon as you have more than 4 disks, it doesn't have zfs's automatic checksum-based error correction, and is less resilient, in general, against multiple disk failures. In the worst case, two lost disks can mean the loss of the whole pack, whereas raidz2 can tolerate the loss of any 2 disks. Plus, with raid you still need an additional volume manager and filesystem.

ZFS raidz1 or raidz2 on NetBSD for mass storage on rotating disks, journaled FFS on RAID1 on SSD for system disks, as NetBSD cannot really boot from zfs (yet).

ZFS because it has superior safeguards against corruption, and flexible partitioning; FFS because it is what works.

Yes. I use a G7 N36L as an offsite-backup server in my second apartment. Works great with NetBSD and zfs, using rsnapshot to make remote backups every night.

Since it is only active for an hour and a half each night, it is my only server to put the disks into powersave mode the rest of the time. Computing eprformance is so low that I don't even run a folding@home client. It usually cannot finish any work package before the deadline.