DESC: The Compaq Array Controller Software V8.6-4 provides the foundation to effectively manage your storage requirements by protecting your current investments while providing the flexibility to meet your future data storage needs. Array Controller Software (ACS) is the software used on the HSG80/HSG60 Controllers. The software resides on the controllers via a PCMCIA card. By upgrading to this version of the Compaq Array Controller Software, customers are offered a number of key enhancements. Now with the support of up to 84 drives behind each controller pair and the addition of support for 72 GB drives in the one inch form factor, customers have the ability to increase their storage capacity on demand. This combined with the increased support of up to 96 host port connections per controller pair, allows you the ability to grow your storage capacity at the speed of your business.