Boss Card Features; Foreign Import; Smart Info; Auto-Rebuild - Dell E43S Series Installation And Service Manual

• 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.
BOSS card replacement by using Foreign Import
option
Prerequisites
1 Stop the cluster and power off the node that needs the BOSS card replaced.
2 Remove the BOSS card and both M.2 SSD cards.
3 Connect the same M.2 SSD cards to the new BOSS card.
4 Connect the new BOSS card to the node, and then power on the node.
BOSS card 93