Huawei 5288 V3 V100R003 User Manual page 222

5288 V3 Server
User Guide
Figure 7-95 SATADOM-3MG-P
Figure 7-96 SATADOM-3MG2-P
Issue 26 (2018-11-19)
NOTE
Each SATADOM has a write protection switch. This switch affects only write operations delivered by
the service system to the SATADOM. A SATADOM include the cache layer and NAND flash. In normal
cases, the write operation is successful only when the data is written to the NAND flash. When installing
a SATADOM, ensure that the write protection switch is off.
l When the write protection switch is off, the write operation sent by the service system to the
SATADOM directly writes data to the NAND flash of the SATADOM.
l When the write protection switch is on, the write operation sent by the service system to the
SATADOM directly writes data only to the cache layer of the SATADOM, but cannot writes data to
the NAND flash. When the cache layer of the SATADOM is full, the previous data is overwritten.
When the device is powered off or restarted, the data at the cache layer of the SATADOM is lost.
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7 Replacing Parts
212