EMC executives predict flash storage technology will be nearly as inexpensive as high-end disk drives within two years. Most disk drives will continue to offer lower prices than flash, though, ensuring a long life for disk technology, it said.

"The one thing that will change the storage industry more than anything else over the next 10 years is the advent of flash technology," said EMC president and CEO Joe Tucci in a keynote address at EMC World in Las Vegas Monday..

Tucci touched on flash technology only briefly, with more detail being provided by EMC storage president David Donatelli. (Compare storage products.)

By the end of 2010, flash will achieve "near price parity" with the highest-speed Fibre Channel rotating drives, Donatelli said in a speech to media members. While Donatelli said EMC can't control the market price because it doesn't build the chips, he said flash prices are dropping much faster than those of disk.

"I really believe flash technology is going to significantly change the way storage products are designed and developed over the next coming years," he said. "It's here today. It's already making a big impact."

When EMC in January announced plans for 73- and 146-gigabyte solid-state drives using flash memory, the company said customers would pay a premium of less than 10% when upgrading four drives to flash. That premium depends on a customer replacing four 146-gigabyte hard disk drives with four 73-gigabyte solid-state flash drives, the IDG News Service reported.

EMC tests show that flash is 30 times faster than the vendor's fastest rotating drive when measured by Input/Output operations Per Second, Donatelli said. And while EMC's fastest rotating drive provides a response time no better than 6 milliseconds, flash response times are a millisecond or less no matter how busy the system is, he said. Donatelli thinks flash storage will be broadly implemented over the next couple years, mainly for an enterprise's most mission-critical applications. Despite the rise of flash, EMC expects a long life for the disk drive market, particularly ATA hard drives.

ATA drives currently cost about 60% less than Fibre Channel storage, and will continue to be significantly less expensive than flash for the foreseeable future, EMC said.