HP3000-L Archives

March 2000, Week 5

HP3000-L@RAVEN.UTC.EDU

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Dave Knispel <[log in to unmask]>
Reply To:
Dave Knispel <[log in to unmask]>
Date:
Fri, 31 Mar 2000 16:29:07 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (99 lines)
You can with FTP and the SITE STREAM command

David Knispel
[log in to unmask]
Phone: 513-248-5029
Fax: 513-248-2672
----- Original Message -----
From: ALBERT KARMAN <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, March 31, 2000 3:51 PM
Subject: ODBC/32 listener


> Good e-day, People Of Earth!
>
> Here's today's missive....I've a UNIX box collecting transactions, using
> ODBC/32 to talk to my 3000.  Is there a way that a UNIX transaction can
> trigger an action (e.g. stream a job) on my e-3?
>
> Al Karman
> Senior Operations Analyst
> Administrative Management Group
> 847.870.9288
> [log in to unmask] <mailto:[log in to unmask]>
>
>         "WARNING:  All e-mail sent to or from this address will be
> received by The Administrative Management Group Inc. corporate e-mail
> system and is subject to archival, monitoring or review by, and/or
> disclosure to, someone other than the recipient."
>
>
>         -----Original Message-----
>         From:   Chris Goodey [SMTP:[log in to unmask]]
>         Sent:   Friday, March 31, 2000 12:39 PM
>         To:     [log in to unmask]
>         Subject:        Re: compression vs no compression, was New DDS-3
> drive, speed vs D DS-1
>
>         Now that we know a DDS-3 drive is maybe 5 times faster than a
> DDS-1 drive
>         when used WITHOUT compression, the next question is:  Why not
> use
>         compression?
>
>         A recent TurboStore timing I did storing to a DDS-2 drive, with
> hardware
>         compression,
>         reported about 1.4 megabytes a second actual through-put (those
> data bases
>         compress well,
>         especially since they are seldom filled to capacity.)
>
>         Now I suppose if you have a very fast cpu it might be able to
> compress
>         better
>         than the tape drive, in which case you would want to turn off
> hardware
>         compression.
>
>         But in general, are we not better off just leaving compression
> on in
>         hardware?
>         (yes, if writing a DDS-1 tape it would be better for
> compatibility with old
>         drives
>         not to compress, but this is a special case.)
>
>         Has any done any testing of hardware versus software compression
> with
>         TurboStore and Orbit
>         backup? My guess was that at the highest compression level, the
> software
>         might be better,
>         but it is enough better to worry about?
>
>
>         > -----Original Message-----
>         > From: Bruce Toback [mailto:[log in to unmask]]
>         > Sent: Friday, March 31, 2000 10:01 AM
>         > To: [log in to unmask]
>         > Subject: Re: New DDS-3 drive
>         >
>         >
>         > Art Frank asks:
>         >
>         > >2.  How much faster (roughly) is [DDS-3] than the C1503 DDS-1
> drive
>         > >that it is replacing?  Hardware compression is off.
>         >
>         > DDS-1 native transfer rate to tape is 173 KB/s. DDS-3 native
> transfer
>         > rate to tape (using DDS-3 media) is 1 MB/s. The channel may be
> slower
>         > than that.
>         >
>         > -- Bruce
>         >
>         > --------------------------------------------------------------

ATOM RSS1 RSS2