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

SearchSecurity

  • GPS jamming

    GPS jamming is the process of using a frequency transmitting device to block or interfere with radio communications.

  • time-based one-time password (TOTP)

    A time-based one-time password (TOTP) is a temporary code, generated by an algorithm, for use in authenticating access to ...

  • incident response

    Incident response is an organized approach to addressing and managing the aftermath of a security breach or cyberattack, also ...

SearchHealthIT

SearchDisasterRecovery

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

SearchStorage

  • network-attached storage (NAS)

    Network-attached storage (NAS) is dedicated file storage that enables multiple users and heterogeneous client devices to retrieve...

  • SSD (solid-state drive)

    An SSD (solid-state drive) is a type of nonvolatile storage media that stores persistent data on solid-state flash memory.

  • NAND flash memory

    NAND flash memory is a type of nonvolatile storage technology that does not require power to retain data.

Close