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2.11 Slot Details
SLOT Details – accessible from the main NumaRAID menu – offers a way to check on the
health status of drives in the QOS 8-‐Bay system and read detailed information about
drives from firmware with SMART (Self-‐Monitoring, Analysis, and Reporting Technology).
The Slot Details will not indicate the status of a reconstructing drive. It is a rather poor
indicator of the condition of the RAID itself, because it only shows whether the drives are
healthy (OK) or failed (BAD) even though a reconstructing drive will still count as a single
drives worth of lost redundancy.
Starting from the left, the first column called ‘Number’ refers to the device number of the
drive; the QOS 8-‐Bay drive device numbers will always read 0-‐7. The next three columns
outline manufacturer information such as source company and product model. Capacity
shows the total amount of data the drive can hold in Gigabytes, and the next two columns
display the name of the hard drive as it is seen by the QOS 8-‐Bay’s Linux operating sys-‐
tem. The Status column reflects if the drives are functioning normally (OK) or if there has
been a failure (BAD).
The SMART feature enables the NumaRAID GUI to read information from the firmware on
the drives such as physical temperature readings and logged read/write errors. SMART is
an invaluable tool to keep tabs on the strength and vitality of the hard drives in the sys-‐
tem. SMART updates are run automatically every few minutes.
QOS 8-Bay User Manual
QOS Server is a subsidary of Ocean Tides Productions Ltd. © Copyright 2013
