Planet NAS-5400, User Manual, Page: 25 / 152

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administrators will be informed via e-mail and can respond immediately, thus ensuring system
safety. You have the option to send a test message after setup to make sure you have entered a
valid configuration.
Due to the excessive amount of junk mail pervading the Internet, many providers do not allow
their SMTP servers to be used by outside users. We therefore strongly recommend using the
SMTP server of your e-mail domain (the address 1, address 2). E.g., if you use root@abc.com,
select the SMTP server belonging to this provider, for example mail.abc.com.
Note: if you enter the host name (e.g. mail.abc.com) of the SMTP server, instead of the IP
address (e.g. 192.168.1.1), please also enter the DNS address to ensure the notification emails
can be sent to administrators.
Step 7: Cache setup
In order to improve data access performance, you can select to turn on "Disk write cache" support
on this page. It is suggested that an UPS is accompanied with the server if this option is turned on
to prevent from data loss when abnormal power failure occurs.