HP Vectra XU 6/XXX HP Vectra XU 6/xxx, Guide to Optimizing performance - Page 38

Can You Use Disk, Striping?

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1 Your PC's Performance Features Increasing the Speed Limit With Ultra SCSI Can You Use Disk Striping? NOTE When your PC writes data to a particular SCSI hard disk drive, that data passes from the integrated SCSI controller to a buffer on the disk drive. The drive then transfers the data from the buffer on to the disk. Before transferring more data to the disk drive buffer, the integrated SCSI controller must wait until the previous data has been transferred on to the disk. By using disk striping, your PC's integrated SCSI controller can avoid this wait, by making the next data transfer to the next disk drive in the striping group. Before transferring more data to the first drive, the controller will transfer data to each of the other drives in the striping group. Because successive data transfers are to different drives, the time between data transfers to any individual drive is increased and so the delaying effect of the buffer-to-disk transfer is removed. Disk striping is only available with Windows NT. Refer to the manual supplied with this operating system for information on how to make use of this feature. Disk striping may also be available for your PC's IDE hard disk drives. To enable disk striping on a group of hard disk drives, all the drives in the group must be of identical type and capacity. Enabling striping on a group of disks of different types may produce unexpected results. 32 English

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1
Your PC’s Performance Features
Increasing the Speed Limit With Ultra SCSI
32
English
When your PC writes data to a particular SCSI hard disk drive, that
data passes from the integrated SCSI controller to a buffer on the disk
drive. The drive then transfers the data from the buffer on to the disk.
Before transferring more data to the disk drive buffer, the integrated
SCSI controller must wait until the previous data has been transferred
on to the disk.
By using disk striping, your PC’s integrated SCSI controller can avoid
this wait, by making the next data transfer to the next disk drive in the
striping group. Before transferring more data to the first drive, the
controller will transfer data to each of the other drives in the striping
group. Because successive data transfers are to different drives, the
time between data transfers to any individual drive is increased and so
the delaying effect of the buffer-to-disk transfer is removed.
Can You Use Disk
Striping?
Disk striping is only available with Windows NT. Refer to the manual
supplied with this operating system for information on how to make use
of this feature. Disk striping may also be available for your PC’s IDE
hard disk drives.
NOTE
To enable disk striping on a group of hard disk drives, all the drives in
the group must be of identical type and capacity. Enabling striping on a
group of disks of different types may produce unexpected results.