In those days, DAT and Exabyte tapes were more portable until DEC spun the DLT group out to quantum. But for a very long time 4mm and 8mm were a lot cheaper/meg. I still have a couple of working 9-track, 8mm and 4mm drives, but nothing from DLT.
I don't know why, but I'd really love a 9 track drive for one of my DEC boxes..
Fair enough. We had DLT in our lab in MRO, but I personally tried to stay away from it as I preferred 8mm and 4mm [i.e. my Alphas that I used had them and a TS08 -- although IT used Legato to DLT behind the scene.
In those days, DAT and Exabyte tapes were more portable until DEC spun the DLT group out to quantum. But for a very long time 4mm and 8mm were a lot cheaper/meg. I still have a couple of working 9-track, 8mm and 4mm drives, but nothing from DLT.
By the time I grew out of using tape, I switched to DVD and finally just enough RAID/JBOD with replication to not bother with tape except for readonly.
On Thu, Jan 24, 2013 at 5:41 PM, Ian McLaughlin <ian at platinum.net> wrote:
The Wikipedia page specifically lists items as read/write and read/only. TK70 appears to be the highest read-only for a TK50.
Ian
On 2013-01-24, at 2:39 PM, Clem Cole <clemc at ccc.com> wrote:
On Thu, Jan 24, 2013 at 5:26 PM, Ian McLaughlin <ian at platinum.net> wrote:
Can anyone confirm or deny this? I have some newer generation DLT drives, but none of them admit to being backwards compatible that far.
IIRC you could >>read<< them, just not write them.
---
Filter service subscribers can train this email as spam or not-spam here
I could use some for TK50, TK70 and TZ87, don't (yet) have any others.
Regards
Rob
-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE]
On Behalf Of Kari Uusim ki
Sent: 24 January 2013 19:39
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] Tape drive explosion
On 24.1.2013 20:46, Dave McGuire wrote:
On 01/24/2013 01:43 PM, Kari Uusim ki wrote:
Yes, there are takeup leader which you can buy.
I don't have prices right now, but I know where to find them.
Are there others here at HECnet who might need them?
I could check if we could get a good bargain if ordering several.
Yes, I could use a few.
-Dave
Didn't remember to tell that anyone who wants takeup leaders, please
specify for which drive type (TK50/TZ30, TK70, TZ85, TZ86, TZ87, etc) you
need a takeup leader. They are slightly different depending on the drive
type.
It would be good to know how many you want as well.
Regards,
Kari
The Wikipedia page specifically lists items as read/write and read/only. TK70 appears to be the highest read-only for a TK50.
Ian
On 2013-01-24, at 2:39 PM, Clem Cole <clemc at ccc.com> wrote:
On Thu, Jan 24, 2013 at 5:26 PM, Ian McLaughlin <ian at platinum.net> wrote:
Can anyone confirm or deny this? I have some newer generation DLT drives, but none of them admit to being backwards compatible that far.
IIRC you could >>read<< them, just not write them.
---
Filter service subscribers can train this email as spam or not-spam here
On Thu, Jan 24, 2013 at 5:26 PM, Ian McLaughlin <ian at platinum.net> wrote:
Can anyone confirm or deny this? I have some newer generation DLT drives, but none of them admit to being backwards compatible that far.
IIRC you could >>read<< them, just not write them.
On 2013-01-24, at 2:06 AM, Kari Uusim ki <uusimaki at exdecfinland.org> wrote:
Is the takeup leader (the plastic ribbon which is fastened to the internal reel) intact? Its outer end which grabs the tape from the cassette is arrow-shaped. Is the "arrow" quite in order? If not, the takeup leader should be replaced.
Tape leader is fine on this drive. The problem with this cartridge is the spool inside the cartridge jammed and wouldn't rotate causing the drive to not rewind.
You can also read a TK50 tape with a newer DLT drive like TZ85, TZ86 and TZ87.
Is this true? According to Wikipedia http://en.wikipedia.org/wiki/Digital_Linear_Tape a CompacTape I can only be read by a TK50 and a TK70.
Can anyone confirm or deny this? I have some newer generation DLT drives, but none of them admit to being backwards compatible that far.
Ian
El 24/01/2013, a les 20:39, Kari Uusim ki <uusimaki at exdecfinland.org> va escriure:
Didn't remember to tell that anyone who wants takeup leaders, please specify for which drive type (TK50/TZ30, TK70, TZ85, TZ86, TZ87, etc) you need a takeup leader. They are slightly different depending on the drive type.
It would be good to know how many you want as well.
I can use also a pair or three, for TK70
Regards,
Kari
Jordi Guillaumes i Pons
jg at jordi.guillaumes.name
HECnet: BITXOV::JGUILLAUMES
On 24.1.2013 20:46, Dave McGuire wrote:
On 01/24/2013 01:43 PM, Kari Uusim ki wrote:
Yes, there are takeup leader which you can buy.
I don't have prices right now, but I know where to find them.
Are there others here at HECnet who might need them?
I could check if we could get a good bargain if ordering several.
Yes, I could use a few.
-Dave
Didn't remember to tell that anyone who wants takeup leaders, please specify for which drive type (TK50/TZ30, TK70, TZ85, TZ86, TZ87, etc) you need a takeup leader. They are slightly different depending on the drive type.
It would be good to know how many you want as well.
Regards,
Kari
I was watching the MOP Console system ID messages from DECnet/E on simh, with an emulated LQA. Noticed something odd: the source address was broadcast. That's not valid, of course. The question is why that happened.
The answer is that the emulation uses the address in slot 0 of the address filter as the source address. The hardware doesn't care what order the addresses go in as far as filtering is concerned; DECnet/E puts broadcast in slot 0 and the physical address in slot 1, followed by any multicast addresses.
Is the SIMH behavior also what a real LQA does? That would be an interesting DECnet/E bug if so... Or does a real LQA just use the physical address, as a UNA would?
paul
