I agree with the principle of what you say, though it is only practical if
your storage units are configured in a way that allows that. It would be
pretty easy and sensible for example with Oracle servers that have SAN
Media Server, and hence a Storage Unit that is only used to backup the
Orac
I agree a 2GB fragment size for an LTO3 / 4 drive is a little on the
small size, but rather than choosing the fragment size to fit the tape
technology perhaps it would be useful to select fragment size based on
the type of the data we are backing up. Large single file data such as
image, audio or e
: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
tape drive will use LOCATE BLOCK to first file to restore, then search from
there.
wdlb5359 wrote:
> What are people using for the fragment size on LTO4 (or I guess LTO3) with
> NBU 6.x?
>
> I ask because the default is 1TB, i.e.
On Wed, Sep 16, 2009 at 09:13:06AM -0400, Justin Piszcz wrote:
> It all depends how long you want to wait to restore a file if you have
> large backups that can span a tape completely.
>
> With 1TB fragment size, assuming there was no compression and you needed
> to restore a 10k file at the end
I'm still on LTO2 and have the max fragment size set to 8GB. That's a file
every few minutes if the drive is allowed to run full speed. Will probably
multiply by 2 or 4 when I ever upgrade.
Jim VandeVegt
VandeVegt @t yahoo.com
Piszcz; Dean
Cc: veritas-bu@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
Ideally, I try to go for FAST restores. I feel our backups are quite
quick.
We also use buffer settings on some Media Servers that contains large
amounts of Data.
I guess it is a weigh up
tape drive will use LOCATE BLOCK to first file to restore, then search from
there.
wdlb5359 wrote:
> What are people using for the fragment size on LTO4 (or I guess LTO3) with
> NBU 6.x?
>
> I ask because the default is 1TB, i.e. more or less don't fragment.
>
> The argument for a large f
...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Justin
Piszcz
Sent: Wednesday, September 16, 2009 2:13 PM
To: Dean
Cc: veritas-bu@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
32GB here.
It all depends how long you want to wait to
Wednesday, September 16, 2009 1:59 PM
> To: william.d.br...@gsk.com
> Cc: veritas-bu@mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
>
>
> 20GB here, using IBM 3592. I've considered making the fragment size
> larger, but . if it aint broke
&
...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Dean
Sent: Wednesday, September 16, 2009 1:59 PM
To: william.d.br...@gsk.com
Cc: veritas-bu@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
20GB here, using IBM 3592. I've considered makin
32GB here.
It all depends how long you want to wait to restore a file if you have
large backups that can span a tape completely.
With 1TB fragment size, assuming there was no compression and you needed
to restore a 10k file at the end of the tape, it would need to read the
entire thing to rest
20GB here, using IBM 3592. I've considered making the fragment size larger,
but . if it aint broke
On Wed, Sep 16, 2009 at 7:26 PM, wrote:
> What are people using for the fragment size on LTO4 (or I guess LTO3) with
> NBU 6.x?
>
> I ask because the default is 1TB, i.e. more or less don'
tember 16, 2009 3:26 AM
To: veritas-bu@mailman.eng.auburn.edu
Subject: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
What are people using for the fragment size on LTO4 (or I guess LTO3)
with
NBU 6.x?
I ask because the default is 1TB, i.e. more or less don't fragment.
The argument for a lar
-bu@mailman.eng.auburn.edu
Subject: [Veritas-bu] Fragment size for LTO4 on NBU 6.x
What are people using for the fragment size on LTO4 (or I guess LTO3) with
NBU 6.x?
I ask because the default is 1TB, i.e. more or less don't fragment.
The argument for a large fragment is that the backup do
What are people using for the fragment size on LTO4 (or I guess LTO3) with
NBU 6.x?
I ask because the default is 1TB, i.e. more or less don't fragment.
The argument for a large fragment is that the backup doesn't have to stop
so often as it does briefly at the end of each fragment to update the
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