Dell PowerEdge MX840c EMC Boot Optimized Server Storage-S1 Users Guide - Page 12

Features, Foreign import, SMART info, Auto-rebuild

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2 Features The BOSS-S1 card supports the following features: Topics: • Foreign import • SMART info • Auto-rebuild • Non-RAID disk support • TRIM • Quick initialization • Erase physical disk 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 are unconfigured. ○ When the virtual disk corresponding to the physical disks is deleted The system must be rebooted after performing foreign import. To check for previous virtual disk metadata, see Controller Information. Only a virtual disk or physical disk native to the adapter will be presented to the operating system. Upon migrating two foreign drives to a controller, you must do either of the following: • Clear the controller configuration if using unconfigured drives - Clear Controller Configuration. • Import the virtual disk if using configured drives - Virtual Disk Import. SMART info SMART monitors certain physical aspects of the disk electronics to help detect predictable disk failures. Data on SMART-compliant physical disks can be monitored to identify changes in values and determine whether the values are within the threshold limits. Any electrical failures in the disk can cause degradation in the performance before failure. A SMART failure is also referred to as a predicted failure. There are numerous factors that predict physical disk failures, such as a read error rate, throughput performance, and changes in spin-up time. In addition, there are factors related to read/write surface failure, such as seek error rate and excessive bad blocks. NOTE: The BOSS-S1 CLI displays error messages with the status OK and NOT OK along with smart attributes. 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. 12 Features

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Features
The BOSS-S1 card supports the following features:
Topics:
•
Foreign import
•
SMART info
•
Auto-rebuild
•
Non-RAID disk support
•
TRIM
•
Quick initialization
•
Erase physical disk
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 are unconfigured.
○
When the virtual disk corresponding to the physical disks is deleted
The system must be rebooted after performing foreign import.
To check for previous virtual disk metadata, see
Controller Information
. Only a virtual disk or physical disk native to the adapter will be
presented to the operating system.
Upon migrating two foreign drives to a controller, you must do either of the following:
•
Clear the controller configuration if using unconfigured drives —
Clear Controller Configuration
.
•
Import the virtual disk if using configured drives —
Virtual Disk Import
.
SMART info
SMART monitors certain physical aspects of the disk electronics to help detect predictable disk failures. Data on SMART-compliant
physical disks can be monitored to identify changes in values and determine whether the values are within the threshold limits. Any
electrical failures in the disk can cause degradation in the performance before failure.
A SMART failure is also referred to as a predicted failure. There are numerous factors that predict physical disk failures, such as a read
error rate, throughput performance, and changes in spin-up time. In addition, there are factors related to read/write surface failure, such
as seek error rate and excessive bad blocks.
NOTE:
The BOSS-S1 CLI displays error messages with the status OK and NOT OK along with smart attributes.
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.
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Features