HP Vectra XU 6/XXX HP Vectra XU 6/xxx, Guide to Optimizing performance - Page 34

1 Your PC's Performance Features Increasing the Speed Limit With Ultra SCSI Multithreaded Operating System Support The PCI SCSI controller in your PC offers additional performance advantages under multithreaded operating systems. Your PC's integrated SCSI controller is capable of receiving and processing the multiple commands issued by a multithreaded operating system. The SCSI controller is also able to re-order operating system commands to obtain the most efficient execution order. Ultra SCSI-Ready The SCSI channel in your PC supports the latest SCSI standard, Ultra SCSI, which gives data transfer rates of up to 20 MB per second. As new mass storage devices supporting this standard become available, you will be able to make use of them immediately. Installing an Ultra SCSI device in your PC will offer a performance improvement over previous generation SCSI devices. Investment Protection Use of the high speed Ultra SCSI transfer rates does not exclude the connection of slower SCSI devices on your PC's SCSI channel. Mixing SCSI devices of different generations will not cause any conflicts in your PC's operation. Three types of 8-bit SCSI devices are supported: Ì SCSI-1 devices These are first generation SCSI devices and support data transfer rates of up to 5 MB/s. Ì SCSI-2 devices The previous generation of SCSI devices that support data transfer rates of up to 10 MB/s. Ì Ultra SCSI devices The latest SCSI devices. These support data transfer rates of up to 20 MB/s. Your PC's advanced SCSI controller can manage SCSI devices of all three types simultaneously. When installing a SCSI device, the data transfer rate for that device must be configured correctly. SCSI data transfer rates can be set independently for each SCSI device installed using the SCSISelect Utility. Refer to your User's Guide for information on this Utility. 28 English