EonStor DS S48 Series Hardware Manual
5.2
Replacing / Upgrading the DRAM module for
RAID Models
The RAID controller comes with a pre-installed DDRII DRAM module and supports
up to 4GB module. You may replace it when you need a larger module or the original
module malfunctions (often shown as the “NVRAM failure” event in SANWatch
software suite).
WARNING
Follow the ESD Precautions (refer to
).
Contact Infortrend or your system vendor for selecting a compatible DRAM module.
Reusing the DRAM module removed from a failed controller is not recommended
unless you have a similar RAID system to test its integrity.
Installing the DRAM module
If you purchased a DRAM module as an upgrade item, please read the following
instructions on how to install it. If not, you may skip this section!
The
(1)
DRAM slot is located in the controller canister and under the
(2)
BBU. To
remove and install the new DRAM module, you must do the following:
1. Turn
the
(3)
captive screw anticlockwise to loosen the BBU, gently lift the BBU
by its
(4)
connector end and pull the BBU out of the
(5)
insertion slot.
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