adding 2016-06-30-hdd-space-calc-for-synapse.md

supporting-docs/projects/2016-06-30-hdd-space-calc-for-synapse.md

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+---
+layout: project
+title: Synapse HDD space calculator
+categories: projects other
+description: Hard Disk Space Capacity Calculation for Matrix.org Synapse Homeserver
+author: Rick Cogley
+maturity: Early beta
+---
+# {{ page.title }}
+
+A handy spreadsheet to help calculate how much disc space you need for your Synapse instance.
+
+You can copy it from [Google Docs](https://docs.google.com/spreadsheets/d/1clrE4WFT7A5NS5AJUdU-mbDZ9rS9fzl6QEbUFJezo7U/edit#gid=0)