"The ICY DOCK ToughArmor is more than a standard drive cage solution as it encompasses the next level in both storage dense applications and durability. The build quality is second to none thanks to its full metal construction and the addition of the EZ Slide trays make swapping drives simple along with aiding in cooling with three sides of the drive exposed to cooling airflow.
Performance of the ICY DOCK ToughArmor was solid as we lost no performance moving from a direct connection to the backplane connection of the drive cage. As far as pricing is concerned, the ToughArmor eight bay solution carries an MSRP of $129.99 and in looking for similar solutions, we were unable to find anything that can fit eight drives into a single 5.25" bay cage." - TweakTown
Read more at: http://www.tweaktown.com/reviews/7280/icy-dock-tougharmor-mb998sp-eight-bay-sata-backplane-cage-review/index.html