Supported Xc Series Appliance And Xc Core System; Boss Card Features; Foreign Import; Smart Info - Dell EMC XC640 Series Installation And Service Manual

Supported XC Series Appliance and XC Core System

The following XC Series Appliance and XC Core System support the BOSS adapter card:
● XC640
● XC6420
● XC740xd
● XC940

BOSS card features

BOSS card supports the following features:
● Foreign Import
● SMART Info
● Auto-Rebuild

Foreign Import

A virtual disk is considered foreign if it is not native to the adapter.
● A virtual disk is considered native to the adapter if:
○ The virtual disk was created or imported on the adapter.
● A physical disk is considered native to the adapter if:
○ There is no previous virtual disk metadata on the adapter and the physical disk(s) are unconfigured.
○ All configured virtual disk(s) on the physical disk(s) are deleted.

SMART Info

SMART monitors certain physical aspects of all motors, heads, and physical disk electronics to help detect predictable physical
disk failures. Data on SMART-compliant physical disks can be monitored to identify changes in values and determine whether
the values are within threshold limits. Many mechanical and electrical failures display some degradation in performance before
failure.
A SMART failure is also referred to as predicted failure. There are numerous factors that are predicted physical disk failures,
such as a bearing failure, a broken read/write head, and changes in spin-up rate. In addition, there are factors related to
read/write surface failure, such as seek error rate and excessive bad sectors.

Auto-Rebuild

A virtual disk rebuild will begin on system boot automatically if the native virtual disk is degraded and a valid rebuild target is
present. A valid rebuild target is any functional drive attached to the BOSS-S1 device which is not part of the native virtual
disk and is of equal or greater storage capacity. An auto-rebuild occurs without prompting the user, and any data on the rebuild
target is overwritten.

Deploying the BOSS card

This section provides a set of high-level installation and removal instructions for the BOSS-S1 card.

Removing the BOSS card

About this task
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
BOSS card 129