Synchronicity

http://dd-b.net/ddbcms/2017/04/synchronicity-2/

http://dd-b.net/?p=3199

So, as you may have noticed recently I got a copy of Jerry Stearns’ old Mpls. in ’73 t-shirt from the surplus archive collection. It was in good enough shape that I scanned it, and gave a passing thought to maybe doing a modern edition—if I could get the various people involved, whoever they were, on board.

So I ran into Jerry Stearns early at Minicon, and confirmed that he thought it was a good enough idea. Also that the artwork was by Ken Fletcher (it’s not signed). And, even more useful, Jerry had with him a collection of paper prints from the same screen.  Those are much higher resolution, not as distorted, and much easier to scan.

The best scan seems to be the red channel of a 48-bit color scan of the version with blue ink on orange paper (contrast!).  With a bit of cleanup it currently looks like this:

Red channel from blue on orange paper print

So, I’m getting ahead of myself here, but it’s fun to work the scan and see what I can get. I guess I’d better talk to Ken soon!

Failed My Save Against Recabling

http://dd-b.net/ddbcms/2017/04/failed-my-save-against-recabling/

http://dd-b.net/?p=3194

It was just too ugly. Even for a temporary server. Especially when you consider all those wires flapping around would impede airflow.

Only took about half an hour of work to rewire it, although waiting for cable tie anchor pads to set (the adhesive wants 24 hours, ideally; and this batch I’ve had pull off in many situations, to the point where if it happens again I’m throwing the rest out) slowed down the elapsed time.

It also made getting the side panel back on easier (this case has a shroud connecting the CPU cooling fan directly to the outside, on the removable side of the case) since the wires were held back. That’s also why the sloppy wiring would work, though—those wires that look like they’d get into the CPU cooler wouldn’t really, once the side panel was on properly.

Cooling is working excellently (the external fan in front of the expansion bay probably helps; that’s held on with cable ties and tape too).

Score from the Minn-StF T-Shirt Collection

http://dd-b.net/ddbcms/2017/04/score-from-the-minn-stf-t-shirt-collection/

http://dd-b.net/?p=3190

I got possession of one of the spares of the shirt with this on it last night (the Minn-StF archives kept the best copy and however many copies they thought they needed). I had one of the original ones, back in the 1970s, but wore it out long ago. It was one of my favorites.

This particular one also has “Video Services” on the back, so I’m particularly happy to get this one now (a year ago, in time to wear in Kansas City, would have been even better, but I don’t think we knew we even had these in the t-shirt collection back then).

This may have been the first local fannish t-shirt; I don’t remember Minicon shirts before this for example.

They were made by local fan Jerry Stearns (now of Great Northern Audio Theater), as I remember it silk-screened by hand at home rather than through a commercial producer. I don’t know where the artwork came from; it doesn’t seem to be signed. Does anybody remember that?

Hobby Servers

http://dd-b.net/ddbcms/2017/04/hobby-servers/

http://dd-b.net/?p=3165

It really probably doesn’t make any sense for businesses with deadlines to meet and a shortage of time to hack around with servers the way we do. On the other hand, we’re keeping quantities of data safe that many of those businesses couldn’t contemplate, for a very small fraction of what they pay for semi-enterprise servers. (Real enterprise storage, from Isolon or people in that tier, is safer, much more available, faster, and so hugely more expensive you can hardly imagine.)

A lot of this works because FreeNAS is built on FreeBSD and uses the FreeBSD port of ZFS.  I originally started using ZFS when Sun first released it, using the free version of Solaris.  After Oracle took over that became less practical, and after a while running old software I eventually converted to FreeNAS, and we build the rest of the Beyond Conventions servers on FreeNAS from the beginning.

ZFS and FreeBSD let us get away with skating closer to the edge.  ZFS was famous from the beginning for finding disk problems in old toy systems (where a lot of people first installed it, to try it out without committing to it) and reporting them as clearcut hardware errors rather than very rare mysterious failures.  That’s a good thing—it shows ZFS is zealously guarding your data (it has its own data block checksums, rather than depending entirely on the hardware the way conventional RAID systems do). And it lets us scrimp on disks, especially in the backup arrays. We’re actually using “white label” drives mostly in the backup array, and we need to have multiple redundancy anyway.

I would rate FreeNAS as a clear step above Synology and Netgear and Drobo and those players in the small-server market, both in reliability (unless you skimp too hard on the hardware) and in features.

Rebma 3, the disk server over at Corwin’s, in its current incarnation is an 8+2x4TB array, meaning double redundancy and 32TB usable. Fsfs 4, my server, has a 3x6TB mirror, so just 6TB usable, but that’s enough for photos and books and such, just not huge piles of video (which live at Corwin’s). Zzbackup is currently being used to build an 8+2x6TB backup array which, when the data is replicated to it (locally! it’s a bit big to replicate over the Internet), will come over here, the drives will be transferred into Fsfs (which has capacity for 13 drives), and it will be kept up-to-date via ZFS replication over the internet. My production array in Fsfs is already replicating onto Rebma over the Internet; so when the last step is complete, we’ll have this huge pile of disk with redundant local storage plus continuous off-site replication. The production servers, though not zzbackup, even have ECC RAM, one further little bit of protection for the data.

The new Rebma cost vaguely $500 excluding disks (we didn’t spend it all at once, Rebma 3 has the same motherboard, processor, and memory as Rebma 2, but a new case with more drive slots and much better cooling), not the $1450 a roughly comparable Synology server would cost. And I do think FreeNAS with ZFS has many advantages over the Synology software.  In either case the disks are the expensive part at this level.

(I can’t resist reading “Synology” as a very clever brand name for “Chinese server”; I wonder if that has anything to do with it really?)

Here’s some of the hacking I’ve done while assembling the current version of zzbackup:

What It Takes

http://dd-b.net/ddbcms/2017/04/what-it-takes/

http://dd-b.net/?p=3158

To boot from a USB flash drive, that is. This old motherboard (ASUS P5P43TD) is bizarrely fussy about booting from USB keys.

You must put the USB key in this particular port

Or the one directly under it. But none of the other 4 on the back.

I believe “Quick Boot” must be disabled

Not absolutely sure on this one.

And then you can set “Removable Dev.” in the boot device priority.

If you use the wrong port, you get some name relating to the particular USB key instead of “Removable Dev.” Then, putting that device first doesn’t boot from it.  (However, to confuse you, if you select the boot menu instead of setup, and choose to boot from that device name, it works.)

I haven’t encountered anything quite this idiotic with more recent motherboards, at least.

Possibly now I’ll be able to find this information if I need it again.