Netgear RND4000 RND4000 User Manual - Page 68

Performance, Disable full data journaling - power supply

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NETGEAR ReadyNAS User Guide SMTP The ReadyNAS device has a built-in e-mail message transfer agent (MTA) that is set up to send alert e-mail messages from the device. Some corporate environments, however, might have a firewall that blocks untrusted MTAs from sending out messages. If you were unable to receive the test message from the Alerts Settings tab, it might have been blocked by the firewall. In that case, specify an appropriate SMTP server in this tab. Figure 1-60 Internet Service Providers (ISPs) for home might also block untrusted MTAs. Furthermore, they might allow you to specify their SMTP server but requires that you enter a user login and password to send out e-mail-this is common with most DSL services. If this is the case, simply enter the user name and password in the fields provided. Performance If you wish to tweak the system performance, select Performance from the main menu. Note that some of the settings suggest that you utilize an Uninterruptible Power Supply (UPS) before enabling that option: • NETGEAR recommends that you select the Disable full data journaling only if the NAS has UPS protection. Without battery backup, there is a small chance that parity written to a disk in a RAID set might become out of sync with the data disks if a power failure suddenly occurs, possibly causing incorrect data to be recovered if one disk fails. Without full data journaling, disk write performance increases substantially. 1-56 v1.0, October 2007 Configuring Your ReadyNAS

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NETGEAR ReadyNAS User Guide
1-56
Configuring Your ReadyNAS
v1.0, October 2007
SMTP
The ReadyNAS device has a built-in e-mail message transfer agent (MTA) that is set up to send
alert e-mail messages from the device. Some corporate environments, however, might have a
firewall that blocks untrusted MTAs from sending out messages.
If you were unable to receive the test message from the Alerts Settings tab, it might have been
blocked by the firewall. In that case, specify an appropriate SMTP server in this tab.
Internet Service Providers (ISPs) for home might also block untrusted MTAs. Furthermore, they
might allow you to specify their SMTP server but requires that you enter a user login and password
to send out e-mail—this is common with most DSL services. If this is the case, simply enter the
user name and password in the fields provided.
Performance
If you wish to tweak the system performance, select Performance from the main menu. Note that
some of the settings suggest that you utilize an Uninterruptible Power Supply (UPS) before
enabling that option:
•
NETGEAR recommends that you select the
Disable full data journaling
only if the NAS has
UPS protection. Without battery backup, there is a small chance that parity written to a disk in
a RAID set might become out of sync with the data disks if a power failure suddenly occurs,
possibly causing incorrect data to be recovered if one disk fails. Without full data journaling,
disk write performance increases substantially.
Figure 1-60