HP

HP 846523-004 4TB SAS 12G Midline

846523-004
ProLiant OEMnearlineCMR4TBSAS-12G3.5"
$53.00/TB
$212.00
newIn Stock
Price updated
Price accurate as of Sep 15, 2026, 03:00 PM
Buy on Amazon →

The HP 846523-004 4TB SAS 12G Midline is a 4TB SAS-12G HDD in new condition. It is in stock at $212.00 - $53.00/TB.

Part number: 846523-004 — decoded, with sibling variants and the warranty check.

Before you buy: this is a SAS drive

SAS drives do not plug into a normal SATA motherboard port. You need a SAS host bus adapter or a backplane that speaks SAS - an LSI/Broadcom HBA in IT mode is the usual answer. A SATA drive will run on a SAS controller, but not the other way round. HBA and IT-mode guide

Same capacity, other options
DriveInterfaceCond$/TBPrice
HP 695842-001 4TB SAS 6GSAS-6GNew$15.00$59.99Buy
Dell 012GYY 4TB SAS 6G RenewedSAS-6GRefurb$21.25$85.00Buy
Dell DRMYH Compellent 4TB NL SAS RenewedSAS-6GRefurb$22.50$89.98Buy
HGST HUS726040ALS210 4TB SAS 12GSAS-12GRefurb$26.65$106.60Buy

All 4TB drives we track, ranked by cost per terabyte.

Model context

Part of the HP line we track.

Quick Verdict

The HP 846523-004 4TB SAS 12G Midline is a 4TB SAS-12G enterprise drive at $53.00/TB - CMR recording makes it safe for all RAID levels and NAS deployments. New unit with full manufacturer warranty.

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Specifications

Capacity4TB
Form Factor3.5"
InterfaceSAS-12G
Recording TechCMR
RPM7200
Cache
Sector Size512n
Workload Rating
Warranty
ASINB086Q4D5ZG
Market context

Against every other drive we have an in-stock price for today, this one is cheaper per tb than 70% of them (171 of 243). The cheapest we can currently buy is $14.99/TB; the middle of the market is $36.94/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 4TB drive we track →Cheapest per terabyte, all categories →Category price trends →
How it compares - 4TB SAS-12G
#1HGST 4TB SAS 12G LFF Renewed
$12.50/TB
#2HGST 4TB SAS 12G LFF Renewed
$20.00/TB
#3Seagate Enterprise Capacity 4TB SAS 12G 512n
$21.57/TB
#4HP 872745-001 4TB SAS 12G
$22.50/TB
#5HGST HUS726040ALS210 4TB SAS 12G
$26.65/TB

Frequently Asked Questions

Yes. The 846523-004 4TB SAS 12G Midline uses CMR recording which is fully compatible with all RAID levels.

Warranty varies by seller. Check the Amazon listing for current warranty terms.

Compatible with any server or workstation equipped with a SAS HBA or SAS backplane. Tested with Dell PowerEdge, HPE ProLiant, Supermicro and IBM System x platforms.

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.