User guide

3.5.4 Physical Drives
If you click [Physical Drives] below the Enclosure icon in the Tree View, then the information
on the physical drives connected to the enclosure is displayed.
Information tab
The Information tab lists all the physical drives.
Global Settings tab
The Global Settings tab allows you to provide settings on the write and read caches for all the
physical drives.
IMPORTANT:
 “SATA Drive Settings” is not supported.
 The write cache option is provided for the HDDs and is different from
the cache on the disk array controller. For the write cache settings for the
logical drives in a battery configuration, see "3.6.5 Logical Drive."
 We recommended you set the write cache for the HDDs to [Disable] (no
check). If you feel your HDDs are performing poorly, take the proper
measures to prevent instantaneous power interruption, including the use
of an uninterruptible power supply (UPS) and setting the write cache to
[Enable] (checking).
 Even if you change the following settings, they return to the default
values after restarting the system.
- Enable Write Cache
- Enable Read Lock Ahead Cache
- Enable Command Queuing
- Enable Read Cache
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