Mixed drives
SHR is designed to use mixed-size drives more flexibly than traditional RAID 5.
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High-intent NAS decision page
Synology SHR vs RAID 5 for Home NAS
Compare Synology SHR and RAID 5 for home NAS buyers by mixed drive sizes, usable capacity, expansion path, portability, and backup requirements.
Primary recommendation
SHR vs RAID 5
Choose SHR when mixed drive sizes and easier expansion matter. Choose RAID 5 when you want a more conventional layout and already know the drive set will stay uniform.
Best for Home NAS buyers who may expand capacity over time instead of buying all disks at once.
Avoid when Avoid assuming SHR removes backup requirements or makes drive upgrades risk-free.
Expansion path
SHR can be friendlier when upgrading one or two drives later, but platform-specific behavior matters.
Portability
Conventional RAID may be easier to reason about across platforms, while SHR is Synology-specific.
Backup
Neither SHR nor RAID 5 protects against deletion, ransomware, theft, or failed upgrades.
Calculator routes
Validate the decision with numbers
Decision trust layer
Audit this NAS decision before buying hardware
The page turns a high-intent buying question into a visible decision model: recommendation, boundaries, calculator routes, purchase checks, and disclosure.
Decision scope
This page answers one buying decision
Choose SHR when mixed drive sizes and easier expansion matter. Choose RAID 5 when you want a more conventional layout and already know the drive set will stay uniform.Risk boundary
The page names when the recommendation should not be used
Avoid assuming SHR removes backup requirements or makes drive upgrades risk-free.Calculator loop
Every decision links back to capacity math
Use the linked calculators to verify usable TB, parity overhead, reserve policy, and tolerance before buying drives.Method
How this decision is framed
Scenario Synology buyer deciding whether to use SHR flexibility or a conventional RAID 5 layout.
Best fit Home NAS buyers who may expand capacity over time instead of buying all disks at once.
Decision factors 4 factors define the trade-off before purchase.
Calculator links 3 numeric routes keep the page connected to capacity math.
Pre-action checks
Before buying hardware
- Decide whether future drive upgrades will happen one at a time.
- Check Synology model limits, drive compatibility, and expansion behavior.
- Keep external backup before changing array layout.
- Prefer NAS-rated CMR drives for parity workloads.
- Plan free-space reserve before the pool reaches high utilization.
NAS decision pages use neutral category searches until affiliate links are ready and disclosed. Verify exact model numbers, compatibility, warranty, backup path, and restore process before buying.
DisclosureNAS buying research layer
Open product-category searches only after the decision is clear
Use these neutral searches as a shortlist, not an endorsement. Match every product category back to the decision factors and calculator result above.
Enclosure
NAS chassis and bay count
Start here when the guide changes how many bays you need before buying disks.
Drives
CMR NAS hard drives
Use category searches that keep RAID rebuild, scrub, and resilver behavior in mind.
Protection
Backup and clean shutdown
Do not let the enclosure and drive budget crowd out recovery planning.
Treat these links as research prompts, not endorsements. Compare specifications, support, warranty, return policy, and real requirements before buying.
DisclosureRelated decision path
Continue through the NAS cluster
FAQ
Decision questions
Is SHR better than RAID 5?
SHR is often better for flexible home expansion with mixed drive sizes. RAID 5 is more conventional when all drives are the same size and platform portability matters.
Can I use the RAID 5 calculator for SHR?
For equal-size drives, SHR with one-disk redundancy is often similar to RAID 5 for first-pass capacity planning. Mixed-size SHR needs platform-specific validation.
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