all-flash array definition

An all-flash array is a solid state storage disk system that contains multiple flash memory drives instead of spinning hard disk drives.

Flash memory, which has no moving parts, is a type of nonvolatile memory that can be erased and reprogrammed in units of memory called blocks. It is a variation of erasable programmable read-only memory (EEPROM) which got its name because the memory blocks can be erased in a single action or "flash." A flash array can transfer data to and from solid state drives (SSDs) much faster than electromechanical disk drives. 

Flash is more expensive than spinning disk, but the development of multi-level cell (MLC) flash has lowered the price of SSDs. MLC flash is slower and less durable than single-level cell (SCL) flash, but companies have developed software that improves its wear levels to the point where MLC is acceptable for enterprise applications. SLC flash still remains the choice for applications with the highest I/O requirements, however.

See also: hybrid flash array

 

This was first published in July 2014

Next Steps

Learn about the benefits of all-flash storage arrays to help determine if they are the right choice for your organization.

Read an expert review of IBM's DS8870 storage array platform for large enterprise SAN environments.

Continue Reading About all-flash array

Dig Deeper

PRO+

Content

Find more PRO+ content and other member only offers, here.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

SearchStorage

SearchITChannel

Close