Operation
User Action
Result
Advanced system reset
Press and hold the button for 10
seconds.
The device performs a basic
system reset. All default system
settings are also restored, deleting
all previously created users, user
groups, and shared folders. The
user data stored on the disks is
retained.
To retrieve data after an advanced
system reset, recreate the
previous folder structure on the
NAS.
Battery Backup Unit
The battery backup unit (BBU) protects the data integrity of each storage controller. If both power supply
units fail during a power outage, the system uses the BBUs for power and activates the asynchronous
DRAM refresh (ADR) feature of the processors. While the BBUs supply power, cached data stored in the
DRAM are written to the M.2 SSDs. This process is called Copy-to-Flash. Once power is restored and the
system restarts, any logs, archives, or other important data are reconstructed from the data stored on the M.
2 SSDs.
Warning
During a power outage, do not remove storage controllers while their BBU status LEDs are
orange. Removing a storage controller during this period interrupts the Copy-to-Flash
process and may result in data loss.
System Board
No.
Component
No.
Component
1
Memory slot 1
6
Memory slot 6
2
Memory slot 2
7
Memory slot 7
3
Memory slot 3
8
Memory slot 8
ES2486dc User Guide
Product Overview
18
