[Bioclusters] sound absorbing material for noisy server room

[Zhaolei Zhang]

Hi,

We recently purchased two Dell racks and they are very noisy, we have had
complains from people next door. We are thinking to get some sound absorbing
material to staple them on the wall inside of the server room. Do anyone
have any good idea on what kind of material is the best for such purpose and
where to buy them ?  I am in Canada.

Thanks.

Z.Z.