RE: CPU speed vs. Network speed?

2000-08-21 Thread Hyde, Glenna M.

I have a first generation G3 beige desktop tower I am using as a server and
the Retrospect runs from there without problems.  I back up to DDS-3 Data
tape.

Thanks
Glenna Hyde
System Administrator/Artist
Werner Ladder Co.
724-588-2000 ext 2391
[EMAIL PROTECTED]

 --
 From: Jon Gardner
 Reply To: retro-talk
 Sent: Wednesday, August 16, 2000 3:56 PM
 To:   retro-talk
 Subject:  Re: CPU speed vs. Network speed?
 
 on 8/16/2000 11:22 AM, Harry Mueller at [EMAIL PROTECTED] wrote:
 
  What would give better performance, a G3 upgrade to the 6100 or a 100
  base T card. I can only do one since the 6100 only has one slot.
 
 Go with the G3 upgrade. The 6100 bus is too slow to benefit from a 100Mbps
 Ethernet card, but the G3 card will at least allow it to maximize the
 existing SCSI and network I/O.
 
 In reality, they'd be better off buying a first-generation G3 box
 instead...one of the original beige desktops or minitowers wouldn't cost
 much more than a G3 upgrade for the 6100, and it would be a much better
 backup server.
 
 
 Jon L. Gardner '89, Computer Systems Manager mailto:[EMAIL PROTECTED]
 Texas AM University Dept. of Food Services http://food.tamu.edu/
 Tel 979.458.1839 * Fax 979.845.2157 * Hip 979.229.4323
 PGP public key available at http://food.tamu.edu/pgp/jon.html
 
 
 
 
 
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Re: CPU speed vs. Network speed?

2000-08-16 Thread andrew

The 6100 has notorious problems with its built-in ethernet, so a 100-baseT
card is the way to go.
- Original Message -
From: "Harry Mueller" [EMAIL PROTECTED]
To: "retro-talk" [EMAIL PROTECTED]
Sent: Wednesday, August 16, 2000 12:22 PM
Subject: CPU speed vs. Network speed?


 Greetings,

 I just got off the telephone with a client who was asking me
 to upgrade their backup system. They are currently using retrospect
 4.3 on a Mac IIsi via 10BT on a switched 10/100 ethernet (client 10,
 servers 100)to their DDS3 tape drive. It seems that the IIsi is dying
 rather quickly and they want to change the backup computer to an old
 6100 they have lying around.

 The big question:

 What would give better performance, a G3 upgrade to the 6100 or a 100
 base T card. I can only do one since the 6100 only has one slot.

 Comments?

 Regards,
Harry


 --
 Harry Mueller
 MaxSolutions, LLC
 708 Little City Road
 Higganum CT 06441-4246
 USA

 voice: 860-345-9986
 fax: 860-345-9136
 email: [EMAIL PROTECTED]
 http://www.maxsolns.com



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Re: CPU speed vs. Network speed?

2000-08-16 Thread Chuck Hornish

Harry Mueller wrote:
 
 Greetings,
 
 I just got off the telephone with a client who was asking me
 to upgrade their backup system. They are currently using retrospect
 4.3 on a Mac IIsi via 10BT on a switched 10/100 ethernet (client 10,
 servers 100)to their DDS3 tape drive. It seems that the IIsi is dying
 rather quickly and they want to change the backup computer to an old
 6100 they have lying around.
 
 The big question:
 
 What would give better performance, a G3 upgrade to the 6100 or a 100
 base T card. I can only do one since the 6100 only has one slot.

Go for the G3 upgrade. The 6100 is too slow to fill a 10-T connection
and a lot of Retrospect's requirements are RAM-based. Make sure the 6100
is not short of RAM: 64 MB recommended.

-- 
Best Regards,

Chuck Hornish, KF6YBC
Narnia Information Systems, Inc.
Fountain Valley, California 92708 USA

Voice: 714-963-7742  FAX: 714-593-5808

mailto:[EMAIL PROTECTED]

Delivering precisely defined database solutions since 1992.


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Re: CPU speed vs. Network speed?

2000-08-16 Thread Matt Barkdull

Greetings,

   I just got off the telephone with a client who was asking me 
to upgrade their backup system. They are currently using retrospect 
4.3 on a Mac IIsi via 10BT on a switched 10/100 ethernet (client 10, 
servers 100)to their DDS3 tape drive. It seems that the IIsi is 
dying rather quickly and they want to change the backup computer to 
an old 6100 they have lying around.

   The big question:

What would give better performance, a G3 upgrade to the 6100 or a 
100 base T card. I can only do one since the 6100 only has one slot.

Retrospect is not very processor dependant, but the 100BaseT 
connection might be.  Heh?

I think I would save the money and buy a good used PCI Mac. 
(7500/7600's make great backup servers).

The problem comes in that the SCSI on the 6100 is not all that fast 
either and a faster processor will do nothing to speed that up.  Then 
the bus speed would remain the same so the 100BaseT might not get the 
results you are looking for.

I'm guessing that on the IIsi they were getting around 10MB/Min 
average backup speed at best.  I would guess that even if you were 
able to put both the G3 card and the 100BaseT card in at the same 
time, the speed increase might take that to 15MB/min at best.

I've got a 7600/132 with a 10/100 card installed and get transfer 
rates right around 15MB/min.  The hold up here I believe is the tape 
drive because even a local backup of the 7600 does not do much better.

We have a fully switch 10/100 network.

Another backup system I have is a 9600/300 with 10/100 card and an 
Adaptec 29160U that runs a Quantum DLT drive.  I get transfer rates 
over the network that approach 100MB/min.  I think if I took the SCSI 
card and DLT drive and put it on the 7600/132, I really don't think I 
would see that much of a performance hit.

Matt



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Re: CPU speed vs. Network speed?

2000-08-16 Thread David Ross

  What would give better performance, a G3 upgrade to the 6100 or a 100
  base T card. I can only do one since the 6100 only has one slot.

A 100 base T card in a NuBus adapter on a 6100 will only go about 4
times as fast as the 10baseT connection. The drivers, the bus, and the
6100 just aren't up to the card. These things were made back when hubs
came in 100 or 10 but not 10/100 and compatibility was needed. Now you
will get the same speed up on the network with the G3 upgrade (a stock
6100 doesn't fill up a 10baseT connection either) plus the computer will
be able to drive the tape drive at a much faster rate.

I've been both routes (well it was on a 7100) and the G3 is the way to go.


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