Re: Strange third party board in PDP-11/45

2018-07-24 Thread Noel Chiappa via cctalk
> From: Mattis Lind > Here is how it is connected: Thanks for that - very informative! > The sandwiched dual boards are sitting in 27 / 26 AB. The board in 27AB > was empty (quick glance), while the board in 26AB has a few TTL chips > on it. Slot 26AB is the Unibus A slot,

Anyone in Europe with a North* Horizon or Advantage in working condition

2018-07-24 Thread dwight via cctalk
Hi I'm trying to assist Jeff with HxC to create a Gotek that can work with the North* hard sectored disk. It has been problematic because of timing constraints. Jeff has been working with several in the US but it is difficult to see what factors are important, working remotely. Jeff is in

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Grant Taylor via cctalk
On 07/24/2018 12:42 PM, Eric Smith via cctalk wrote: I wrote a lot of DDS2 and DDS3 tapes back in the day. When my DDS3 drive broke, I got another drive. I found out that my first drive was seriously out of calibration, and though it could read its own tapes, other drives could not. All the

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Carlo Pisani via cctalk
I have a brand new DLT drive for sale brand new, it's SCSI, 2U 2018-07-24 20:42 GMT+02:00 Eric Smith via cctalk : > I wrote a lot of DDS2 and DDS3 tapes back in the day. When my DDS3 drive > broke, I got another drive. I found out that my first drive was seriously > out of calibration, and though

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Eric Smith via cctalk
I wrote a lot of DDS2 and DDS3 tapes back in the day. When my DDS3 drive broke, I got another drive. I found out that my first drive was seriously out of calibration, and though it could read its own tapes, other drives could not. All the data was gone. I'm considering getting an LTO drive, but I

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Zane Healy via cctalk
> On Jul 24, 2018, at 10:55 AM, Grant Taylor via cctalk > wrote: > >> On 7/21/18 9:14 AM, Carlo Pisani via cctalk wrote: >> what is your experience? > I personally have had reasonable success with CD-Rs. > > I used Verbatim Blue CD-Rs for general storage back when I had a single 6.4 > GB

RE: Printerworks?

2018-07-24 Thread Fred Cisin via cctalk
Has printerworks gone under? Their website is unresponsive. Does anybody have scans of their CX and SX "catalogs"? On Tue, 24 Jul 2018, Ali wrote: I can verify that I cannot access printerworks either. I checked and I had made PDFs of printer specific pages for printers that I own or were

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Grant Taylor via cctalk
On 7/21/18 9:14 AM, Carlo Pisani via cctalk wrote: what is your experience? I personally have had reasonable success with CD-Rs. I used Verbatim Blue CD-Rs for general storage back when I had a single 6.4 GB drive in '98. I have recently read the contents of all the surviving disks with no

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Grant Taylor via cctalk
On 7/23/18 9:51 AM, Alexander Schreiber via cctalk wrote: Another thing to keep in mind: it is nice if your backup medium lasts decades, but what about the reader for it? Will that be available down the road as well and usable? I seem to recall reading about a ""tape drive that wrote

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Grant Taylor via cctalk
On 7/22/18 2:06 PM, Zane Healy via cctalk wrote: I wouldn’t touch 4mm DAT tapes with a ten foot pole, if I can help it. I’ve used them in the past, but only in special cases, OR more importantly when forced to. I had reasonable success with DDS2 & DDS3 DATs back in the day. I routinely

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Grant Taylor via cctalk
On 7/23/18 12:00 PM, Geoffrey Oltmans via cctalk wrote: Probably a good idea to use something like RAR with parity. I know I have downloaded some multi-segment binaries in RAR format from usenet with several missing segments and as long as I had the parity file set it could successfully

Re: RK05 spindle pulleys - trade 50Hz vs 60Hz?

2018-07-24 Thread Steve Malikoff via cctalk
Mattis said > I have two RK05J-AA as part of a system that I guess has been imported used > form the US. A DC-10 simulator. > > The only difference is the pulley, the motor position and a 230 / 115 V > jumper inside. > > Is there anyone in 60Hz land that has the opposite problem and want to >

Re: how good is the data reliability with CD ROM and DVD RAM?

2018-07-24 Thread Carlo Pisani via cctalk
has anyone ever used Iomega Rev as backup media? how good is that? 2018-07-23 23:11 GMT+02:00 Ali via cctalk : >> Probably a good idea to use something like RAR with parity. I know I >> have >> downloaded some multi-segment binaries in RAR format from usenet with >> several missing segments

RK05 spindle pulleys - trade 50Hz vs 60Hz?

2018-07-24 Thread Mattis Lind via cctalk
Hello! I have two RK05J-AA as part of a system that I guess has been imported used form the US. A DC-10 simulator. The only difference is the pulley, the motor position and a 230 / 115 V jumper inside. Is there anyone in 60Hz land that has the opposite problem and want to trade two spindle