Reference Guide

The NVMe PCIe SSD supports orderly hot swap allowing you to add or remove a device without halting or restarting the system in which
the device is installed.
The supported NVMe PCIe SSD hot swappable functions are dened below:
Orderly or Hot
Insertion
You insert a device into a running system where a similar device has not been previously inserted from the time it
was last booted. The systems that support NVMe PCIe SSDs are congured to handle the PCIe resource balancing
in the event of a hot insertion, when operating within a Dell supported operating system. This preset system
conguration makes the hot insertion an orderly operation, if performed with supported operating systems.
Orderly Removal You remove a device from a running system. Prior to physically removing the device, you must notify the system
that the device is about to be removed. This notication denes hot removal as an orderly operation.
Orderly Swap You remove a device from the system in an orderly fashion and replace it with a supported device. The device that
is removed and the device that replaced it use the same device driver.
WARNING: Do not remove an NVMe PCIe SSD without notifying the system rst. For more information, see Preparing to remove
an NVMe PCIe SSD.
NOTE: Orderly hot swap is only supported when NVMe PCIe SSDs are installed in a supported Dell system running a supported
operating system. Do not insert or remove an NVMe PCIe SSD while accessing the system BIOS or Hll conguration. To ensure
that you have the correct hardware setup for your NVMe PCIe SSD, see the system specic Owner's Manual at Dell.com/
support/manuals.
Device health
The NVMe PCIe SSD design is based on NAND ash technology. NAND SSDs have a nite number of program or erase cycles and a nite
number of spare blocks (replacements for other worn or faulty NAND blocks).
The program erase cycles and spare blocks are continuously monitored for each NVMe PCIe SSD through various software management
applications. For more information, see Conguring and managing your NVMe PCIe SSD 2.5 inch SFF device.
Self-Monitoring Analysis and Reporting Technology
The Self-Monitoring Analysis and Reporting Technology (SMART) feature set minimizes unscheduled system downtime by providing a
method of early detection of device degradation or fault conditions. By monitoring and storing critical performance and calibration
parameters, the SMART feature set attempts to predict degradation or fault conditions. Awareness of a negative reliability condition allows
the host system to warn you of an impending risk of device failure and advise on appropriate action.
Remaining rated write endurance
NAND SSDs have a nite number of program erase cycles. The NVMe PCIe SSD is warranted to a maximum amount of data written to the
device in total bytes written. The NVMe PCIe SSD self monitors for these limits, and software management applications notify you when
you reach these limits.
NOTE
: If you continue to write to the device after it reaches the threshold of total bytes written, the amount of time the NVMe
PCIe SSD retains data while powered o decreases below device specications. For more information, see Technical
specications.
6 Overview