2048MB is what most people set, but the fragment-to-filesize is the best 
way to optimize this for your restores.

On Wed, 21 Jun 2006, WEAVER, Simon wrote:

>
> Hello Justin
> Sorry I have been unwell.
> Ok, well not sure really, but are you referring to the fragmentation size on
> the storage unit that you can change? If I recall, I think 1TB is the max
> size you can set, but I thought this affected just restores Justin.
>
> Unless I am missing the point here??
>
> Regards
>
> Simon Weaver
> 3rd Line Technical Support
> Windows Domain Administrator
>
> EADS Astrium Limited, B32AA IM (DCS)
> Anchorage Road, Portsmouth, PO3 5PU
>
> Email: Simon.Weaver at Astrium-eads.net
>
>
>
> -----Original Message-----
> From: Justin Piszcz [mailto:jpiszcz at lucidpixels.com]
> Sent: 20 June 2006 16:50
> To: veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] Fragment size question,something that affects us
> all..
>
>
> Any comments on this? Simon? :)
>
> On Tue, 20 Jun 2006, Justin Piszcz wrote:
>
>> Finding the sweet spot for the fragment size is a time consuming task
>> as each
>> of our environments is different.
>>
>> How much does each 'index' per each fragment take up?
>>
>> Say I backup 200GB to an LTO2 tape, if I write an index every 2GB, how
>> much
>> space is lost due to the file markers?
>>
>> I know the file markers immensely speed up the restores, but what is
>> the
>> impact of them on backups?  Has anyone thought of this?
>>
>> Also, what if the fragment size is 32GB and the backup is exactly
>> 32GB? Are
>> two fragments written or one?
>>
>> If any of you have thought about this, please comment!
>>
>> Thanks,
>>
>> Justin.
>>
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