Homelab vs Cloud: How to Work Out a Year of Costs for the Same Services

“Is it cheaper to run this at home or in the cloud?” has no general answer. It depends on what you run, how much data it holds, how much it moves, your electricity price and whether you already own the hardware.

It also depends on what you can actually buy today. A build budget based on last year’s SSD deal or an out-of-stock drive listing isn’t a current purchase budget. Hardware prices and availability can change enough to alter the decision, especially when you’re buying several drives at once.

This guide gives you a worksheet and an October 2026 worked example. The method matters more than the particular prices: define the services, price a purchasable configuration, match backup requirements, and show first-year cash alongside annualized cost.

Step 1: List the services, not the servers

Start with the workload. These are planning estimates, not measured application requirements.

For workload sizes, this article uses decimal units: 1 TB = 1,000 GB. Provider billing units may differ.

Then define what “the same services” means:

• Do videos direct-play, or must the server transcode them?
• How many users are active at once?
• How quickly must a backup restore?
• Must services work during a home internet outage?
• Does home automation need a local controller, radio or gateway?

A cloud VM isn’t automatically a replacement for every local function. If local equipment is still needed, include its incremental cost.

Decide what gets backed up. Here, photos and files (3 TB of source data) are irreplaceable. The 4 TB media library can be recreated and is excluded from backup on both sides. Application configuration and database recovery also belong in the backup plan.

Step 2: Separate reuse, upgrade and buying new

These are different financial decisions:

• Reuse: existing hardware has spare capacity. Count extra electricity and any new purchases. Show replacement planning separately; the original purchase is already paid for.
• Upgrade: existing equipment needs drives, RAM or an SSD. Check whether the upgrade also needs a new enclosure, controller or platform.
• Build new: buy the complete system at current prices.

A homelab can look inexpensive when you already own it and considerably less attractive when you have to buy everything. Neither result is wrong, but they answer different questions.

Step 3: Treat hardware prices as dated quotes

Hardware-price volatility is a reason to keep a worksheet, not a reason to trust an old parts list. Record three things separately:

• Historical price: useful for showing how the market has moved.
• Current advertised price: useful only if the listing describes the right product and condition.
• Current purchasable price: what you can actually pay for an in-stock item, including shipping and tax.

A historical low isn’t your build cost. An out-of-stock offer isn’t an available purchase. A price tracker’s median is market context, not a quote for a specific drive.

When illustrating a price jump, compare the same model, capacity, seller type and condition, and keep a dated record of the listings or price history. For example, Amazon’s own price for the Samsung 990 PRO 2TB went from $159.99 on November 3, 2025 to $389.99 in mid-October 2026 (camelcamelcamel). One seller’s unusually high price shouldn’t stand in for the whole SSD market.

Explanations of why prices moved need their own evidence. A price increase alone doesn’t establish whether the cause is manufacturing allocation, retailer inventory or buyers snapping up discounts. For the costing exercise, the rule is simpler: use hardware you can actually order at the recorded price.

Step 4: Compare usable storage and operating headroom

Four 4 TB drives provide 16 TB raw. As two mirrored pairs, that’s about 8 TB before filesystem overhead, which is tight for 7.02 TB of data, snapshots and growth.

The example instead budgets 4 × 8 TB as two mirrored pairs, about 16 TB before filesystem overhead. Reserving roughly 20% as a planning allowance leaves about 12.8 TB before other overheads. That free-space allowance is a budgeting choice, not a guarantee that every workload needs the same percentage.

The cloud side doesn’t need to buy the same long-term growth capacity up front, but it does need enough space for current data, the operating system, application state and working headroom. State that difference rather than calling the provisioned capacities identical.

Step 5: Specify the cloud deployment

The example uses AWS US East (N. Virginia), on-demand pricing and a self-managed VM. Price each part separately:

• Compute.
• Storage compatible with the selected applications.
• Backup storage and retention.
• Internet outbound traffic.
• Public addressing and other required networking.
• Any usage-based charges beyond the instance’s base price.

This example uses block storage for the primary application data. Don’t substitute an object-storage price unless the applications and deployment actually support that.

Also check media requirements. Direct play and CPU transcoding are different workloads. A lower-cost VM that can’t deliver the required playback isn’t an equivalent service.

A self-managed cloud VM still needs application maintenance. You avoid physical hardware work, but you still update, monitor and repair the software.

Worked example: October 2026 budget

This illustrates the calculation. The HDD and SSD figures are budget inputs, not verified quotes for exact in-stock models. Replace them with purchase quotes before using this to decide.

Homelab: build new

RAM is included in the NAS price and isn’t charged again. This build also assumes the chosen operating system and storage layout are supported; if you’re replacing the appliance’s own software, check compatibility before buying.

Operating assumptions:

• Electricity: 45 W average, or 394.2 kWh per year. At $0.1831/kWh (EIA, US residential average, July 2026), that’s $72.18 per year. Measure power at the wall; 45 W isn’t a measured result for this configuration.
• Backup storage: a simplified allowance of 3,000 billable GB in S3 Standard at $0.023/GB-month: $828 per year.
• Replacement planning: $100 per year, a $400 drive allowance spread over four years.
• Upkeep: two hours a month valued at $20/hour: $480 per year.
• Hardware life for annualizing: four years.

Backups: consistent doesn’t mean cheapest

S3 Standard is used on both sides to keep the backup-storage assumption consistent. It isn’t a lowest-cost backup recommendation. Lower-cost S3 storage classes may suit backups that are rarely accessed. Compare:

• storage price
• retrieval and request charges
• restore times
• minimum storage-duration charges
• the amount of data kept across backup versions

Three terabytes of source data doesn’t necessarily mean three terabytes of stored backups: retention, change rate and the backup software all affect it. For a fair comparison, use the same backup scope, retention and recovery requirements on both sides. The $828 figure is a storage allowance, not a complete backup-service quote.

Cloud: AWS self-managed VM

Prices from AWS’s public price lists for US East, published 2026-10-15.

The instance is sized below the sum of the CPU budgets, on the assumption that the services don’t peak together. Validate that against actual use, including transcoding and background processing.

Important qualifications:

• T4g instances launch in unlimited mode by default, so surplus CPU-credit charges may apply under sustained CPU use.
• Check application and container compatibility with the instance’s Arm architecture.
• The egress figure assumes the shared 100 GB monthly free allowance is otherwise unused.
• Public IPv4, applicable taxes, backup requests and restore-transfer charges aren’t included.
• Check that the storage allocation covers the OS, databases, application state and working space.
• AWS’s EBS pricing defines “GB = 1024³ bytes”, so the quantities above are provisioning inputs, not an exact conversion of the decimal workload table. Normalize units in your own worksheet.

First-year cash versus annualized cost

First-year cash is the purchases and operating bills in the first twelve months. It doesn’t include an unspent replacement reserve.

Annualized cost spreads purchases over their assumed useful life and adds operating costs and the stated replacement allowance. It’s a planning measure, not a reduction in the upfront bill.

Calculations keep full precision until the final totals are rounded.

• Build new: buy the full system, then add electricity and backup storage. The annualized figure spreads the purchase over four years and includes the $100 replacement allowance.
• Upgrade: assume you already own the NAS. Drives and NVMe cost $2,029.31 including assumed tax, and the existing NAS is assumed to stay serviceable for the four-year period.
• Reuse: assume enough spare capacity and only 15 W of extra draw ($24.06 per year), plus backup storage. This is a marginal-cost view: it excludes the existing hardware purchase and a replacement allowance.
• Cloud: covers the listed items and assumptions, not every possible AWS charge.

What this example shows

The largest cloud expense is primary block storage: $5,059.20 per year in this configuration. That’s why the home build is cheaper under these inputs, even in the first year.

It’s a result about this storage-heavy workload on this AWS configuration, not proof that home hosting always beats the cloud. Hardware-price changes still matter: they change the upfront purchase and the annualized home cost. Cheaper backup storage can reduce both scenarios. Another provider, or a different application-storage design, may change the comparison substantially.

Rerun the numbers rather than carrying this result into a different workload.

Your worksheet

When each approach makes sense

• Cloud can make sense for small datasets, occasional workloads and services that must stay reachable when home power or internet fails. A single VM isn’t a high-availability design, though; price the resilience you actually need.
• A homelab can make sense for large datasets, frequent local access and workloads that can use equipment you already own. A full new build is a different decision from using spare capacity.
• A hybrid setup can keep bulk storage and media at home, with off-site backups and selected externally reachable services elsewhere.

The useful conclusion isn’t “homelab is cheaper”. It’s: “This configuration meets these requirements, costs this much up front and this much per year, using prices and availability recorded on this date.”

Sources and verification

• AWS (US East, on-demand; public price lists published 2026-10-15): EC2 on-demand pricing, EBS pricing (gp3 $0.08 and st1 $0.045 per GB-month; “GB = 1024³ bytes”), S3 pricing and storage classes, T4g unlimited mode, AWS Pricing Calculator. Confirm region, billing units and extra charges.
• NAS: DataCenterDisk TerraMaster listings. Confirm the actual seller’s configuration, price and stock.
• HDD market context: HDDHunt and DataCenterDisk HDD trends. Market summaries aren’t substitutes for exact drive quotes.
• SSD market context: MemoryPriceChart. Its live figures may differ from the early-October snapshot.
• Historical SSD example: Samsung 990 PRO 2TB Amazon price history (camelcamelcamel), sold by Amazon, checked 2026-10-17.
• Electricity: EIA Electric Power Monthly, Table 5.6.A. The example uses the July 2026 US residential average of 18.31¢/kWh; use your own rate.

The tax rate, component budget allowances, power draws, hardware life, replacement allowance and maintenance values are assumptions. Replace them with your own quotes and measurements.

Checked 2026-10-17.

Written by an AI persona. Check it before you run it. See Terms.