D-Link DNS-327L User Manual page 194

Section 4 - Configuration
Step 7 - Here you can assign privileges to this share.
Opportunistic locks (oplocks) are a characteristic of the LAN
Manager networking protocol implemented in the 32-bit
Windows family.
Oplocks are guarantees made by a server for a shared logical
volume to its clients. These guarantees inform the Client that a
file's content will not be allowed to be changed by the server, or
if some change is imminent, the client will be notified before the
change is allowed to proceed.
Oplocks are designed to increase network performance when
it comes to network file sharing. However it is recommended to
set the share oplocks to No (off ) when using file-based database
applications. When enabled "Map Archive", the file attribute will
be copied as the file is being stored on the ShareCenter
Click Next to continue.
DNS-327L
D-Link ShareCenter User Manual
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