georgecooldude
asked on
Shadow Copies - Disadvantages? What are they?
I am going to setup shadow copies and was thinking of creating a shadowed copy at 11.am , 1pm , 3pm, and 5.30pm.
We have an HP Proliant M series. it has a 3ghz Pentium 4, 512mb ram, and 3 250gb sata drives running in raid 5 giving us 500gb storage.
Would this amount of shadow copying slow down the server by a significant ammount? Or how much would it slow down by? And  would it be advisable to shadow copy every 1 hour, or perhaps every 2 hours? Staff are generally using computers from 8am - 6pm.
We have an HP Proliant M series. it has a 3ghz Pentium 4, 512mb ram, and 3 250gb sata drives running in raid 5 giving us 500gb storage.
Would this amount of shadow copying slow down the server by a significant ammount? Or how much would it slow down by? And  would it be advisable to shadow copy every 1 hour, or perhaps every 2 hours? Staff are generally using computers from 8am - 6pm.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
??
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
>> And if I have a shadow copy of readme.txt and say the user decided to delete this copy. Then can it still be recovered? I know shadow copies are only partial and need the original file to work. So would this work?
I just need clarification on the above now. =)
I just need clarification on the above now. =)
yes it would.
if the whole file changes, the whole file will be shadowed, as all blocks of the file are changed.
if the whole file changes, the whole file will be shadowed, as all blocks of the file are changed.
ASKER
thankyou
ASKER
We've moving up from a 15gb drive. Most users are good at keeping their files but occasionally there are problems. Tape backups have proved really annoying in the past.
I don't think we will ever use all 500gb within the next couple of years at least. We also have another spare slot we could put a 250gb drive in which would give us an extra 190gb or something of space.
Are there any other disadvantages? And if I have a shadow copy of readme.txt and say the user decided to delete this copy. Then can it still be recovered? I know shadow copies are only partial and need the original file to work. So would this work?