Product specifications

Infortrend
7-4
IMPORTANT!
• The "Periodic Drive Check Time” is enabled by choosing a time
value. The RAID controller will poll all connected drives
through the controller’s drive channels at the assigned interval.
Drive removal will be detected even if a host does not attempt to
access data on that specific drive.
• If the "Periodic Drive Check Time" is set to "Disabled" (the
default setting is "Disabled"), the controller will not be able to
detect any drive removal that occurs after the controller
initialization process. The controller will only be able to detect
drive removal when host access is directed to the drive side.
7.1.3 Auto-Assign Global Spare Drive
Figure 10 - 3: Enable Auto-Assign Global Spare Drive
The “Auto-Assign” function automatically assigns any “new”
drives that are not included in logical configurations as Global
Spares.
The Fault Scenario:
Spare drives accelerate rebuild of a logical drive. In the example as
described below, multiple faults can occur at the same time making
the array exposed to the risk of data loss:
 There is only one Global Spare in a RAID subsystem.
 That Global Spare has been used to rebuild a logical drive.
 The failed drive is swapped out and replaced by a new one.
 Chances are system administrators forgot to configure the
replacement drive as a spare.