IT Answers » Deduplication

QuorumSoft – Citrix Xenserver options

Ryucon — Sun, 13 Feb 2011 20:24:53 +0000

Has anyone used QuorumSoft’s Alike software for Citrix? I’ve tried their free version but am wondering how it compares to others on the market.

Deduplication Backup strategy

Mgtow — Mon, 13 Sep 2010 17:58:32 +0000

I’m looking for a hardware base dedupe backup solution that does not require additional licensing.

VMWare, Windows, Deduplication, Defragmentation: Bad combo?

ITKE — Wed, 23 Jun 2010 20:12:52 +0000

I was in a meeting the other day talking about our VMWare implementation and one of our Windows engineers brought up a comment that I wanted to throw out to everyone.

He was told by a VMWare engineer that if you run Windows defragmenation on the virtual server while also are using de-duplication on the storage, it can cause corruption of data on the virtual server and/or the VMDK. He hasn’t been able to get any documentation on this fact, so we are not sure if this is true or not.

Does anyone have any experience with this or know of anyone who has? Any information would be appreciated. Thanks.

SQL Help needed

CompEng — Wed, 02 Sep 2009 13:16:00 +0000

In what way, using SQL could a statement be written in that it would not allow any duplications of a particular text in a column? How would it be set up? Also if you have three different tables, lets call them A, B, and C., and there may be multiple matches in each of the tables. I need to accomplish (first) in which table may there be matches and secondly in the three tables where might there be wholes or matches too. For instance, B and C may have the same values in them and A wouldn’t? A and B may have matches that are not in C. How could a SQL statement be derived that would show those that are common to all and also those that are common to only each groups of two? Is this possible?

How to do away with duplications in my query?

How to find wholes and matches in three tables?

How to find the same in-groups of two table?

I need to create new numbers and I have to be sure that there are no existing numbers that have been generated in the past.and to do this i need to look at three different files. So I need to be able to develop a system that would look at each file compare the three to a forth (which is used to create the new numbers)

Looking for help…Thanks

how to delete dup records from a table to ?

Supergirl2008 — Fri, 17 Oct 2008 15:59:27 +0000

basically i want to remove dups in a table.

i have a table called productincludes
it has a few fields listed here:
ParentProductID
ChildProductID
SummarizedRowID
IncludeStatus
LastUpdateDate
DisplayOrderByID

i ran a update for a business request that made many dup rows and want to clean this up. when i run this select to check on how many dups to verify cleanup:

select count(*) ctz,ParentProductID,
ChildProductID, IncludeStatus from products_productincludes
where IncludeStatus =0
group by ParentProductID,
ChildProductID, IncludeStatus
order by ctz desc

notice i am grouping by only 3 of the rows not all the rows in the table !!!

i want only the rows that dup cause of these 3 rows to go away. the rest that are outside the groub by clause should stay. that is to say there can be more dups in the table as long as i dont have any dups on these 3 fields. thats what i want to achieve here.

thank you for the help