D-Link DSN-3400-10 Hardware Reference Guide for DSN-3200-10 Valid for fir - Page 29

Appendix A Replacing and Upgrading FRUs This appendix describes how to replace or upgrade the Field Replaceable Units (FRUs) in your xStack Storage Array. FRUs that can be replaced or upgraded include:  Battery Pack  System and buffer memory  SATA drives  Fans  Power supplies A.1 Installing the Battery Pack The xStack Storage Array accommodates a 4-cell or 6-cell shrink-wrapped battery pack. Because write-back caching is always enabled, we recommend you have a battery to back up the buffer cache contents. To install a battery in your xStack Storage SAN Array, follow these steps: 1. Hold the battery as shown to align the fastener pad. Make sure the battery cable and connector is located nearest to the battery socket J35 on the controller (see Figure A-1 ). Figure A-1 Aligning the Battery DSN-3000 series Hardware Reference Guide 29