requires you to suspend (or stop) your vm long
enough to copy it to a secondary area and then back it up from there.
_
From: Neil Standley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 20, 2008 6:16 PM
To: NT System Admin Issues
Subject: RE: Backup Miracle
Hi all,
We&#x
t: Re: Backup Miracle
That doesn't require a miracle. Our LTO drives get almost a gig a minute
throughput. Well that's what backup exec reports anyhow. The server I
just looked at backs up 130GB with verify in less then 2.5 hours.
- Original Message -
From:
"Jim Majorowicz" <[EMAIL PROTECTED]> wrote on 04/16/2008 01:27:30 PM:
> I think I?ve been tasked with making something near impossible
> happen, so I?m going to start by asking the question here then start
> my google-fu. My boss has just asked for a backup solution that
> will do the following
do you have lots of small files to backup? That usually causes a slow
backup.
When monitoring your backups split them and see if a certain type of
backup is slow. Maybe only exchange backup is very slow and file backup
is OK etc.
How fast can you robocopy files to your USB drive?
rgds
OS
ease respond to
"NT System Admin Issues"
To
"NT System Admin Issues"
cc
Subject
RE: Backup Miracle
You said your backup up to a USB 2.0 drive, but are you sure the server
has USB 2.0 ports? Many servers do not, and you may be using it in 1.0
compatibility mode, which
16, 2008 3:14 PM
To: NT System Admin Issues
Subject: RE: Backup Miracle
Thanks to everyone that replied. Based on your replies, I started some
testing. My math is correct, there is something in this particular I/O
stream that is really slowing down the backup. Anybody know what the
I/O speed
Thanks to everyone that replied. Based on your replies, I started some
testing. My math is correct, there is something in this particular I/O
stream that is really slowing down the backup. Anybody know what the I/O
speed of a Raid-5 array on a DELL PERC 4e/DC is suppose to be?
From: Jim Majo
Miracle
PS, verification is a TOTAL waste of time. Total.
From: James Kerr [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 16, 2008 10:46 AM
To: NT System Admin Issues
Subject: Re: Backup Miracle
That doesn't require a miracle. Our LTO drives get almost a gig a minute
throughput.
PS, verification is a TOTAL waste of time. Total.
From: James Kerr [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 16, 2008 10:46 AM
To: NT System Admin Issues
Subject: Re: Backup Miracle
That doesn't require a miracle. Our LTO drives get almost a gig a minute
throughput. Well t
Indeed. With a modern tape drive, you should be able to sustain anywhere
from 800 MB to 1 GB per min.
From: James Kerr [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 16, 2008 10:46 AM
To: NT System Admin Issues
Subject: Re: Backup Miracle
That doesn't require a miracle. Our LTO d
On Wed, Apr 16, 2008 at 1:27 PM, Jim Majorowicz <[EMAIL PROTECTED]> wrote:
> Must be complete in 10 Hours!
660 GB (write then read 330 GB) in ten hours is 1.1 gigabytes per
minute. That's easily possible with today's mid-range tape drives
(LTO, DLT, etc.). You'll need good equipment, though --
That doesn't require a miracle. Our LTO drives get almost a gig a minute
throughput. Well that's what backup exec reports anyhow. The server I just
looked at backs up 130GB with verify in less then 2.5 hours.
- Original Message -
From: Jim Majorowicz
To: NT System Admin Issues
Few thoughts / questions:
24 hours seems awfully high, especially without a verify.
* are you doing brick-level backups of exchange?
* can you do a weekly full and daily diff on the data files?
* how fragmented is the server?
* how fragmented is the external drive?
* I am not
Can you characterize the hard drive you're backing up to? Spindle
speed, seek latency, write times, etc.
What numbers does a simple copy of a single really large (1+gb) and
then a buncha smaller files across this connection yield?
Is there another USB port/controller on this machine that you can
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