Video summary

5 MISTAKES NEW NAS BUYERS ALWAYS MAKE

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Technology

Summary of “5 Mistakes New NAS Buyers Always Make”

This video is a first-NAS buyer guide focused on avoiding common “pain points” rather than deep technical learning. It notes that some recommendations can conflict, so it may be hard to avoid every issue at once. It also suggests using chapter links to jump to specific concerns.

1) Mistake: Underestimating Noise

What to consider

  • NAS noise isn’t like a laptop/PC—multiple factors add up, including:
    • enclosure material
    • fan behavior
    • drive mechanics

  • Metal enclosures tend to amplify noise more than plastic enclosures (better heat dissipation, but often louder).

  • Fan behavior depends on design:

    • Many 4-bay systems use a single rear fan; others may place fans in the base.
    • Fan placement/direction affects audibility (rear-angled fans may be more noticeable; downward-facing may be quieter).
    • Most NAS OSes allow fan speed control.
  • Hard drive noise tends to increase with capacity:
    • Drives above ~8TB often produce more clicking/humming/vibration due to more platters and actuator activity.
    • Noise sources include actuator movement and vibration transmitted through the system.

Workarounds discussed

  • SSD-only setups remove drive vibration/click noise, but don’t automatically remove fan noise.
  • M.2 NVMe SSDs can reduce noise but may run hotter, which can make fans ramp up.
  • Recommendation: prefer SATA SSDs over NVMe for a better balance of:
    • lower heat (less fan ramping)
    • reduced vibration/noise

2) Mistake: Not Planning for Scalability

Core guidance

  • Don’t buy for today’s capacity only—storage demand grows.
  • Account for “chaff” data, such as photos and phone backups that accumulate quickly.

Expansion challenge

  • Fully populating a 2-bay NAS early can make expansion harder later (potentially requiring drive swapping and extra steps/hardware changes).

Recommendation

  • Choose a NAS with more bays than you initially fill (e.g., a 4-bay with unused slots).
  • Add drives one-by-one as you grow.

RAID flexibility

  • Some brands support “flexible RAID” (examples referenced: Synology/TerraMaster), which can help accommodate adding drives and mixing capacities/brands.

3) Mistake: Over-relying on SSD Cache (Ignoring CPU/RAM Realities)

Main points

  • SSD cache can help, but it’s not for everyone.
  • RAM upgrades help with responsiveness/latency distribution, but if the CPU is weak, more RAM may not improve performance much.
    • The video suggests checking CPU utilization before upgrading memory.

Caching types explained

  • Write caching: data is staged on SSD, then later moved to HDDs for faster upload/commit.
  • Read caching: “hot data” is duplicated on SSD for faster access—typically best for small/high-frequency I/O like metadata/index/thumbnail-type data rather than large sequential blocks.
  • Some implementations can tune caching granularity/block size (an example mentioned includes QNAP IO-tiering, though phrasing is unclear).

Practical recommendations (instead of “cache everything”)

  1. Put the NAS OS/system on an SSD for faster UI/service boot and responsiveness.
  2. Use tiering:
    • manually move frequently accessed data, or
    • use vendor automatic tiering (“hot/medium/cold”).
    • Example model described: fast hot tier on SSD, medium tier on SSD/SATA, and bulk cold tier on HDD.

4) Mistake: Ignoring Power Consumption

Key concepts

  • Larger mechanical drives can draw more power, even idle, because they must stay ready.
  • The video emphasizes CPU choice:
    • It acknowledges earlier ARM suggestions, but recommends certain Intel low-power options (names like N100/N150/N305/N355/N95/N97 are mentioned).
    • These are claimed to run around 8–10W while still being capable.

Power-saving features to enable

  • Hard drive hibernation
    • Use “hibernation” settings so disks spin down after inactivity.
    • The video claims hibernation can trigger sooner than “standby” and reduce per-drive draw from roughly 10–12W down to sub-1W (framed as an example).
  • Power scheduling
    • Turn the NAS off/on on a timetable (e.g., off overnight, on during backup windows and when you need it).
    • Goal: keep the NAS active only when required.

Evidence example

  • A power test is described for a UniFi 8-bay Pro system (ARM-based) with 8 HDDs:
    • High-intense use: “triple watts” level
    • After hibernation: reduced to the “20s/30s” range (exact numbers unclear, but the magnitude drop is emphasized)

5) Mistake: Buying the Wrong Capacity Strategy for Cost/TB

Core economic argument

  • Use price per terabyte to compare drive strategies.
  • Large drives have downsides:
    • If one large drive fails, you lose data unless redundancy is sufficient—often pushing buyers to purchase multiple drives of the same capacity.

Example comparison (as described)

  • A 30TB drive is priced around $599–$699 (varies by region/season).
  • Buying two for redundancy can make effective cost per usable TB worse than using smaller drives.

Alternative strategy

  • Use multiple smaller drives with RAID.
    • Example described: RAID 5 with parity.
    • Example numbers: 12TB drives under ~$200 each (approximate figures).
    • With RAID 5, you can get more usable TB for less money (e.g., 4 drives total → 3 drives usable equivalent).

Additional benefit

  • More drives can increase parallel reads/writes, improving performance.

Trade-offs acknowledged

  • More drives can also mean:
    • higher noise
    • higher power consumption
    • more points of failure

Main Sources / Speakers Mentioned

  • The primary speaker is the video creator (unnamed in the transcript), referenced alongside “Eddie.”
  • Brand/model examples cited for features/products/assumptions:
    • Synology
    • QNAP
    • TerraMaster
    • UniFi
  • Link-out mention:
    • NAS Compares (site hosting additional written guides/videos)

Original video