WD

WD WD Purple 8TB WD81PURZ

WD81PURZ
WD Purple8TBSATA-6G3.5"
$51.87/TB
$414.98
newIn Stock
Price updated
Price accurate as of Sep 18, 2026, 04:30 PM
Buy on Amazon โ†’

The WD WD Purple 8TB WD81PURZ is a 8TB SATA-6G HDD in new condition. It is in stock at $414.98 - $51.87/TB.

Same capacity, other options
DriveInterfaceCond$/TBPrice
WD Ultrastar 8TB SASSAS-12GRefurb$27.50$220.00Buy
Seagate BarraCuda 8TB ST8000DMZ04SATA-6GRefurb$29.39$235.10Buy
Dell M40TH 8TB SAS 12G 512ESAS-12GRefurb$30.63$245.00Buy
HGST Ultrastar He8 8TB SAS 12G NASSAS-12GRefurb$31.25$249.99Buy

All 8TB drives we track, ranked by cost per terabyte.

Model context

Part of the WD line we track.

Quick Verdict

The WD WD Purple 8TB WD81PURZ is a 8TB SATA-6G enterprise drive at $51.87/TB - Verify recording technology before use in RAID. New unit with full 3-year warranty.

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Specifications

Capacity8TB
Form Factor3.5"
InterfaceSATA-6G
Recording Techโ€”
RPM5400
Cache256MB
Sector Sizeโ€”
Workload Rating180TB/yr
Warranty3 years
ASINB07CYBNZKG
Market context

Against every other drive we have an in-stock price for today, this one is cheaper per tb than 47% of them (117 of 247). The cheapest we can currently buy is $14.99/TB; the middle of the market is $36.00/TB.

Where the wider market has moved

These are third-party figures about the retail market as a whole, quoted and dated. They are not our own measurements and they do not describe this specific drive.

Compare against every 8TB drive we track โ†’Cheapest per terabyte, all categories โ†’Category price trends โ†’
How it compares - 8TB SATA-6G
#1Seagate BarraCuda 8TB ST8000DMZ04
$29.39/TB
#2Seagate BarraCuda 8TB ST8000DMZ04
$31.25/TB
#3WD WD Red 8TB WD80EFAX
$31.25/TB
#4WD WD Red 8TB WD80EFAX
$31.25/TB
#5Seagate SkyHawk 8TB ST8000VX0022
$35.00/TB

Works in these NAS machines

QNAP TS-673A
Vendor-listed
On QNAP's TS-673A list as Surveillance WD81PURZ
QNAP TS-653D
Vendor-listed
On QNAP's TS-653D list as Surveillance WD81PURZ
Asustor (10 NAS series)
Vendor-listed
On Asustor's list as Purple WD81PURZ

Resolved against manufacturer compatibility lists we read and dated, capped at 4. Vendor-listed means the manufacturer names this exact part number; fit-verified is our own check of form factor, interface and recording technology against a published requirement. Neither is a guess, and a drive the registry cannot resolve shows nothing here rather than a maybe. How compatibility actually works

Frequently Asked Questions

Check the recording technology before using in RAID. CMR is preferred over SMR for RAID arrays.

3-year manufacturer warranty.

Compatible with any server, NAS or workstation with a SATA port. Works in Synology, QNAP, TrueNAS, UnRAID and all major NAS platforms.

Use Case Scenarios

๐Ÿ 
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
โœ“ Excellent fit
Verify CMR recording before using in RAID. New drives come with full warranty.
๐Ÿ’พ
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
โœ“ Excellent fit
8TB SATA drives are ideal for backup targets. SATA gives maximum $/TB for backup repositories.
๐Ÿ—๏ธ
Virtualization Host Storage
VM images and snapshots on Proxmox, VMware or Hyper-V.
~ Good fit
Suitable for VM storage where workloads are not IOPS-intensive. SATA is fine for single-host VM storage. Consider NVMe cache for latency-sensitive VMs.

Maintenance & Troubleshooting

Maintenance Checklist

On installCheck SMART baseline on arrival
Run smartctl -a /dev/sdX and record: Reallocated_Sector_Ct, Power_On_Hours, Spin_Retry_Count. Establishes baseline for future comparison.
MonthlyRun SMART short self-test
smartctl -t short /dev/sdX โ€” takes 1-2 minutes, catches most developing issues. Schedule during off-peak.
QuarterlyRun SMART long self-test
smartctl -t long /dev/sdX โ€” full surface scan, takes 4 hours for 8TB. Any test failure is grounds for immediate replacement.
QuarterlyCheck RAID array health
Verify no degraded drives. A degraded array with no hot spare is one failure from data loss. Check mdstat or controller UI.
AnnuallyVerify drive firmware version
Check WD support site for firmware updates. Some versions have known bugs affecting integrity.
Every 3-5 yearsPlan proactive replacement
Enterprise HDDs have higher failure rates after year 4-5. At 8TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: Loose SATA data or power cable, failed port, or drive not spinning up.
Fix: Reseat both cables. Try a different port. Listen for spin-up sound. Test with a known-good cable.