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Storage

NAS

  • The Dell PowerEdge R720 and R720XD use the H710 PERC RAID controller with 512 MB cache
  • Helios64 is billed as the ultimate ARM-powered NAS. It comes with its own UPS which can power the unit for 15 minutes. It was reviewed by Alex from the Self-Hosted podcast, who took issue with poor build quality and value. Consumer-friendly products from Synology and QNap may perhaps be a better solution.
  • Synology 1621+ was reviewed in Self-Hosted 43. Synology offers DSM for easy management.
  • Brian Moses has an annual blog series on making your own DIY NAS.

Flash memory

3D NAND flash chips can be defined by how much data is stored in memory cells which are stacked vertically. SLC, MLC, TLC, and QLC represent progressively more memory-dense NAND technologies. They also represent progressively less long-lived devices in terms of P/E cycles.