Browse Definitions :
Definition

DWPD (device/drive writes per day)

Drive writes per day (DWPD) is an endurance rating that manufacturers of NAND flash storage provide their customers. Unlike hard disk storage, solid state storage has a limited number of write/erase cycles before the oxide layer within the storage device's floating-gate transistors begins to break down, a process known as flash wear-out. The DWPD rating tells the customer how many times he can expect to overwrite the entire capacity of the solid state drive before it becomes unreliable. 

DWPD will vary, depending upon whether the storage is intended for consumer or enterprise use. Consumer use solid state drives (SSDs) have a fixed endurance rating and capacity. Enterprise SSD manufacturers, on the other hand, may offer SSDs of varying endurance levels and capacities depending upon whether the workload will be read-intensive, write-intensive or mixed. For instance, a vendor might sell an enterprise SSD with a high-capacity option intended for read-intensive application workloads. Such a high-capacity enterprise SSD might offer an endurance of only one full DWPD, meaning the drive can write and rewrite data to full capacity once a day for the warrantied lifespan of the drive. Another enterprise SSD option from the same product family might support 25 DWPD at a lower capacity for use with write-intensive workloads. 

This was last updated in March 2016

Continue Reading About DWPD (device/drive writes per day)

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

SearchSecurity

  • Payload (computing)

    The term payload, when used in the context of networking or telecommunications, is the data carried inside of a packet (or other ...

  • access control

    Access control is a security technique that regulates who or what can view or use resources in a computing environment.

  • ethical hacker

    An ethical hacker, also referred to as a white hat hacker, is an information security expert who systematically attempts to ...

SearchHealthIT

SearchDisasterRecovery

  • virtual disaster recovery

    Virtual disaster recovery is a type of DR that typically involves replication and allows a user to fail over to virtualized ...

  • tabletop exercise (TTX)

    A tabletop exercise (TTX) is a disaster preparedness activity that takes participants through the process of dealing with a ...

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a data center.

SearchStorage

  • storage at the edge

    Storage at the edge is the collective methods and technologies that capture and retain digital information at the periphery of ...

  • Flash Storage

    Flash storage is any type of drive, repository or system that uses flash memory to keep data for an extended period of time.

  • optical disc

    An optical disc is an electronic data storage medium that can be written to and read from using a low-powered laser beam.

Close