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OpenVMS Hobbyist Program | Alpha Systems Forums | Alpha Hardware Forum
Author Hp Storageworks DAT 160
pmoreau
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Posts: 16
Location: France
Joined: 18.03.08
Posted on May 17 2008 00:55
Hi all,

I've got a new HP DAT160 at home for backups. Connected in SCSI U2 LVD on my DS15A.

Is it officially supported on VMS 8.3 update 5 ?

The drive is recognized and I had no problems to init a tape, so I suppose it's OK. I don't plan to use compaction (My datas are mainly alreday compressed data). It will be nice to backup a 73 Gb disk on one tape...

For info, the DAT160 tape is thicker than others DATs. I now understand better how they manage to jump from 36/72 Gb to 80/160 Gb from DDS5 to DDS6 :-)


Patrick
http://pagesperso-orange.fr/subwww/
Author RE: Hp Storageworks DAT 160
HobbyistOne
Super Administrator

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Posts: 126
Location: Plano, TX
Joined: 20.02.08
Posted on May 17 2008 06:28
Stephen Hoffman wrote:
DLT 20/40GB drives are close to free, or sometimes free. Drives rated at 35/70 and 40/80 aren't priced that much above free. Classic DLT drives and media have been found very reliable.


Gotta agree with Stephen here, the DLT's are much more reliable than the DAT tapes. I have a client that's always having problem with them. I've rarely had any issues with DLT.

Many of the Alpha support IDE disks, and as cheap as they are, disk-to-disk backup is very cheap and fast. I think John Malmberg got a VMS rsync client working that sounds promising. I've used rsync on other systems to do remote backups, and it's pretty neat.
Author RE: Hp Storageworks DAT 160
pmoreau
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Posts: 16
Location: France
Joined: 18.03.08
Posted on May 18 2008 02:40
I maintain my datas on two SCSI disks, and USB external disks on a PC (copy via ftp of zip archives and savesets backup). But I also made sometimes tape backups on DAT's; I have a DAT72 and a DAT160. Tapes are stored at office.

During the vacations, I keep my backups on DAT's and 2"1/2 USB disks (I have some smart 250 Gb ones). Some datas are also copied on DVD RW.

I have a very old DTL drive (a 6 Gb one) sitting somewhere


Patrick
http://pagesperso-orange.fr/subwww/
Author RE: Hp Storageworks DAT 160
pmoreau
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Posts: 16
Location: France
Joined: 18.03.08
Posted on May 19 2008 01:18
Twenty use per cartridge is OK for me, I generally use a tape 3 times max.

At work, main backup system is a SDLT320 library (on a Solaris system ... ). VMS backups are made on DAT 40 and DAT72 actually. No reliability problems.

At home, I had a DAT24 drive. No pb. I had a drive failure on a DAT72 (I have a new one now on the slim box).


Patrick
http://pagesperso-orange.fr/subwww/
Author RE: Hp Storageworks DAT 160
pmoreau
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Posts: 16
Location: France
Joined: 18.03.08
Posted on July 13 2008 01:40
The DAT160 is at least twice as fast than the DAT72. A 36,5 Gb backup was made
in 1h and 40 min which translates into a bit more than 6 Mb/sec , not bad.

The disk is a 73 Gb SCSI on on U169 bus and tje tape is on an Ultra 80 controller.


Patrick
http://pagesperso-orange.fr/subwww/
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malmberg
December 12 2017
HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.

nmbonao
December 08 2017
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Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis
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malmberg
September 10 2017
https://sourceforge.net/p
/vms-ports/wiki/VMSInstal
lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?


DoeveR
August 07 2017
Where can I find the write up on running VMS 6.1 using the simh emulator?

Bart
March 20 2017
Happy to have found my password again!

pintero
March 16 2017
peteherrera. Agreed.

peteherrera
March 04 2017
It would be nice to be able to buy the lastest hardcopy full OpenVMS docset at a very reduced price through the Hobbyist program. smiley

malmberg
February 05 2017
Decus > Connect > Encompass<Country>

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February 02 2017
What's the status of DECUS memberships? Just found my membership card. :-)

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December 29 2016
The openvms disks question is frequently answered in the forums, and is not something to ask about in the shout box.

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Hello, I am in need of the openvms.disk, but I don't know where to obtain it

moch75
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personal alpha

moch75
December 24 2016
personal alpha+

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