.. _comparison_matrix: Comparison matrix ================= ===================================== ===================== =================== ===================== Feature Research Data Storage Research File Share Research Cold Storage ===================================== ===================== =================== ===================== Accessible from UIS HPC service Y N [1]_ Y Accessible from CUDN Y Y [1]_ Y Backup Y Y Off-site backup for disaster recovery Y Y Recovery point objective N/A 1 hour 24 hours Failover to secondary data centre Y Number of data copies 1 2 2 Snapshots Y Restore window N/A Up to 1 month Up to 24 hours Additional data protection Y Access methods SFTP, RSYNC SMB [1]_ SFTP, RSYNC Minimum purchase 2TB 2TB 5TB File Quota 512,000 per TB N/A 100,000 per TB Licences available 1, 3 and 5 years 1, 3 and 5 years 1, 3 and 5 years ===================================== ===================== =================== ===================== .. [1] RFS projects can be made available as a mounted filesystem on CSD3, rather than externally via CUDN. :ref:`RFS on CSD3 `. Typical use case ---------------- ======================= ============================================================== **Research Data Store** | Large active data sets, frequent access, high performance – for example, data processing on HPC. | It can also be used as a target for an additional copy of departmental data storage. Data are not backed up. **Research File Share** | General purpose storage with fast connection to Research Computing Services and other services on the CUDN. | Good for storing high-value data sets that require extra protection and are accessed frequently. **Research Cold Store** | Data that do not require frequent access and can accept high latency retrieval time. Good for long term | storage of non-active data sets. It can also be used as a target for an additional copy of departmental data storage. ======================= ==============================================================