DatacenterDisk

HP 4TB SAS Enterprise HDD - Prices

7 HP 4TB SAS hard drives tracked. Prices from $13.75/TB. Updated every 4 hours.

Buy or Skip?
✓ Buy if: you want 47% below-average pricing on 4TB HP drives. New with manufacturer-year warranty.
✗ Skip if: you need higher workload rating than 550TB/year.
Buy on Amazon → $55.00
Best $/TB
$13.75
Drives
7
Condition
New + Refurb

At $13.75/TB, HP 4TB SAS drives are $12.13/TB cheaper than the 4TB SAS category average of $25.88/TB — strong value at this capacity.

HP 4TB SAS - should you buy?

HP OEM 4TB SAS drives are enterprise-grade units from ProLiant servers. Typically Seagate or HGST internals at $13.75/TB.

$/TB ▲Brand / ModelCapInterfaceTechCacheSectorWtyPriceCond.90DBuy
👑$13.75
~ 30d avg
HP
695510-B21 4TB SAS 6G
695510-B21
CMR ·
4TB
SAS-6G
7,200 RPM
CMR—512n—$55.00newBuy →Details▼
👑$13.75
~ 30d avg
HP
695510-B21 4TB SAS 6G
695510-B21
Refurb · CMR ·
4TB
SAS-6G
7,200 RPM
CMR—512n—$55.00REFURBBuy →Details▼
$15.00
~ 30d avg
HP
695842-001 4TB SAS 6G
695842-001
CMR ·
4TB
SAS-6G
7,200 RPM
CMR—512n—$59.99newBuy →Details▼
$22.50
~ 30d avg
HP
872745-001 4TB SAS 12G
872745-001
Refurb · CMR ·
4TB
SAS-12G
7,200 RPM
CMR—512n—$89.99REFURBBuy →Details▼
$30.00
↓ vs 30d avg
HP
846523-004 4TB SAS 12G Midline
846523-004
Refurb · CMR ·
4TB
SAS-12G
7,200 RPM
CMR—512n—$120.00REFURBBuy →Details▼
$33.75
↑ vs 30d avg
HP
695842-001 4TB SAS 6G LFF
695842-001
CMR ·
4TB
SAS-6G
7,200 RPM
CMR—512n—$135.00newBuy →Details▼
$53.00
↑ vs 30d avg
HP
846523-004 4TB SAS 12G Midline
846523-004
CMR ·
4TB
SAS-12G
7,200 RPM
CMR—512n—$212.00newBuy →Details▼

Other HP SAS capacities

1TB1.2TB1.8TB2TB3TB4TB6TB8TB12TB

Other brands at 4TB SAS

DellHGSTHPSeagate

Frequently Asked Questions

HP 4TB SAS drives are enterprise-grade and designed for 24/7 datacenter operation. Check individual model specs for MTBF and workload ratings.

Both are available. Refurbished HP SAS drives are typically low-hours datacenter pulls - excellent value for non-critical storage. New drives with full warranty are recommended for production RAID arrays.

At 4TB, RAID 1 mirrors or RAID 5 are typical. These smaller capacities rebuild quickly, reducing the window of vulnerability.

Use Case Scenarios

🏠
Home & SMB NAS
Building a mid-range NAS for media, backups and file sharing.
✓ Excellent fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. New drives come with full warranty.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
4TB SAS drives are ideal for backup targets. Dual-port SAS suits dual-path backup infrastructure.
🏗️
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. SAS dual-port suits HA cluster shared 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 — takes 1-2 minutes, catches most developing issues. Schedule during off-peak.
QuarterlyRun SMART long self-test
smartctl -t long /dev/sdX — full surface scan, takes 2 hours for 4TB. 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 HP 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 4TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: HBA not initialized, SAS expander issue, cable fault, or incompatible controller.
Fix: Verify HBA firmware. Check SAS topology with sas2ircu or StorCLI. Test with known-good cable. Confirm drive is SAS not SATA.