Seagate TS-251-4G User Manual download pdf (Page 97)

Advanced system reset (10 sec):

After pressing the reset button for 10 seconds,

you will hear two beeps at the third and the tenth seconds. The NAS will reset all

the system settings to default as it does by the web-based system reset in

"Administration" > "Restore to Factory Default" except all the data are reserved.

The settings such as the users, user groups, and the shared folders previously

created will be cleared. To retrieve the old data after advanced system reset,

create the same shared folders on the NAS and the data will be accessible again.

Enable hard disk standby m ode:

This option allows the hard drives on the NAS to

enter standby mode if there is no disk access within the specified period.

Enable light signal alert when the free size of SATA disk is less than the

value:

The status LED flashes red and green when this option is turned on and the

free space of the SATA hard drive is less than the value. The valid range of the

value is 1-51200 MB.

Enable write cache (EXT4 only):

If the disk volume of the NAS is formatted as

EXT4, turn on this option for higher write performance. Note that an unexpected

system shutdown may lead to incomplete data transfer when data write is in

process. This option will be turned off when any of the following services is

enabled: Download Station, MySQL service, user quota, and Surveillance Station.

You are recommended to turn this option off if the NAS is set as a shared storage in

a virtualized or clustered environment.

Enable warning alert for redundant power supply on the web-based

interface:

If two power supply units (PSU) are installed on the NAS and connected

to the power sockets, both PSU will supply the power to the NAS (applied to 1U and

2U models). Turn on the redundant power supply mode in "System Settings" >

"Hardware" to receive warning alert for the redundant power supply. The NAS will

sound and record the error messages in "System Logs" when the PSU is plugged out

or does not correspond correctly. If only one PSU is installed on the NAS, do NOT

enable this option. Note that this function is disabled by default.

Buzzer

Enable alarm buzzer:

Turn on this option to allow the alarm buzzer to beep when

certain system operations (startup, shutdown, or firmware upgrade) are executed or

system events (error or warning) occur.

Write Cache

Better write performance can be obtained when this option is enabled. Please not that

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Seagate TS-251-4G User Manual Page 97