Since my article on ‘Storage Optimization with Atlantis‘ on April 3rd, I’ve been in contact with Atlantis and got some additional information I would like to share with you.
First of all, in the article it says the following:
Another point of interest is, does Atlantis live up to the promises made regarding the alleged savings of up to 90%? Of course these numbers are sales numbers and it’s up to 90%. But recently I heard about some Atlantis test results from renowned industry parties, which aren’t so positive as the sales number want you to believe. The first tests do show a huge decrease of read I/O but they also show an increase in write I/O. Now, I don’t want to claim that the myth is busted, further investigation and testing is required, but you should definitely try before you buy.
The issues mentioned above where discovered by our colleagues from PQR and also by the Cisco VXI team. But according to Atlantis, they have already corrected this issue.
The issue with the linked clones was caused by mis-alignment of the redo logfile because of the VMware View Composer and linked clone format. Atlantis released anew version which is able to treat a linked clone specifically for this issue and correct misaligned writes.
According to Atlantis, the PQR team has already retested Atlantis ILIO and found good write offload as promised.
The second item I would like to share, is a concern Anne Jan raised when using Atlantis ILIO.