Solid Boost to I/O Speed

摘要

The Unisys Mainframe at Greater El Paso's Credit Union had run out of steam. Response times had slowed to unacceptable levels as transaction volumes climbed to 135,000 per day, and completion times for nightly batch-processing jobs stretched to seven hours. Meanwhile, new regulations forced the credit union to keep systems online longer, leaving only a six-hour window to complete those jobs. "We needed to do it faster," says Rudi Kuehne, senior vice president of data processing. After identifying database I/O as the bottleneck, Kuehne upgraded to an EMC Clariion storage array. That helped, but the problem didn't go away. "Even with faster disks, we didn't gain enough time to satisfy the operational requirements," he says.