SAS Enterprise HDD - Prices & Comparisons

All 3.5" and 2.5" SAS hard drives ranked by live cost per terabyte: 90 tracked across 1TB - 20TB, the cheapest in stock at $14.99/TB. SAS-6G and SAS-12G, new and refurbished together. SAS drives need an HBA or SAS backplane - they do not run on a SATA port.

90drives·prices re-checked about once a day·last checked
Best $/TB
$14.99
Drives Tracked
90
Capacity Range
1TB - 20TB
Cheapest per TB right now
HP ST31000640SS 1TB SAS
$14.99/TB
$14.99 total · 1TB
REFURB / USED Amazon: Used / LikeNew · sold by CSA Computers · seller's note on the listing

The lowest $/TB SAS hard drive in stock, any condition - its condition is on the card.

Buy on Amazon $14.99

Which SAS enterprise HDD should you buy?

For nearline NAS and backup workloads, the MDD MaxDigitalData drives offer the best $/TB on large capacities (18TB-22TB) with a 5-year warranty. For mission-critical RAID arrays requiring dual-port and maximum reliability, the Seagate Exos X and WD Ultrastar DC series are the datacenter standard. Refurbished HGST Ultrastar pulls from hyperscale deployments are excellent value for secondary storage.

Price and quality90 of 90 drives
Condition
Capacity
77 of 77 part numbers (90 offers)
  • $14.99/TB$14.99
    HP ST31000640SS 1TB SAS
    ST31000640SS
    1TB · SAS-6G
    Refurb
  • $15.13/TB$45.39
    HGST HUS724030ALS640 3TB SAS 6G
    HUS724030ALS640
    3TB · SAS-6G
    Refurb
  • $16.00/TB$48.00
    Seagate Constellation ES.2 3TB SAS Enterprise
    ST33000650SS
    3TB · SAS-6G · 2 offers
    Refurb
  • $17.00/TB$68.00
    HP 695842-001 4TB SAS 6G
    695842-001
    4TB · SAS-6G
    New
  • $18.33/TB$55.00
    HGST Ultrastar HUS723030ALS640 3TB SAS 6G
    HUS723030ALS640
    3TB · SAS-6G
    Refurb
  • $18.60/TB$74.39
    Seagate Enterprise Capacity 4TB SAS 12G 512n
    ST4000NM0025
    4TB · SAS-12G
    Refurb
  • $19.84/TB$59.53
    HP MB3000FBUCN 3TB SAS 6G
    MB3000FBUCN
    3TB · SAS-6G
    Refurb
  • $20.00/TB$59.99
    MDD 3TB SAS 6G 7200RPM
    MD3TSAS12872E
    3TB · SAS-6G
    Refurb
  • $21.25/TB$85.00
    Dell 012GYY 4TB SAS 6G Renewed
    012GYY
    4TB · SAS-6G
    Refurb
  • $22.50/TB$89.98
    Dell DRMYH Compellent 4TB NL SAS Renewed
    DRMYH
    4TB · SAS-6G
    Refurb
  • $23.00/TB$69.00
    Seagate ST3000NM0023 3TB SAS 6G 7.2K
    ST3000NM0023
    3TB · SAS-6G
    New
  • $23.50/TB$235.00
    HGST Ultrastar He10 10TB SAS 12G
    HUH721010AL5200
    10TB · SAS-12G · 2 offers
    Refurb
  • $25.00/TB$149.99
    MDD 6TB SAS 12G 7200RPM
    MD6TSAS12872E
    6TB · SAS-12G · 2 offers
    Refurb
  • $25.00/TB$250.00
    Seagate Enterprise Capacity 10TB SAS Helium
    ST10000NM0096
    10TB · SAS-12G · 2 offers
    Refurb
  • $26.33/TB$79.00
    Seagate 3TB Enterprise Capacity SAS 6G
    ST3000NM0023
    3TB · SAS-6G
    Refurb
  • $26.79/TB$375.00
    WD Ultrastar 14TB SAS WUH721414AL5204
    WUH721414AL5204
    14TB · SAS-12G · 2 offers
    Refurb
  • $26.99/TB$26.99
    HP 508011-001 1TB 6G SAS
    508011-001
    1TB · SAS-6G
    Refurb
  • $28.03/TB$112.11
    HGST HUS726040ALS210 4TB SAS 12G
    HUS726040ALS210
    4TB · SAS-12G
    Refurb
  • $29.34/TB$88.02
    Seagate Constellation ES.2 3TB SAS Enterprise
    ST33000650SS
    3TB · SAS-6G
    New
  • $29.78/TB$238.26
    Toshiba MG08 8TB
    MG08SDA800E
    8TB · SAS-12G
    Refurb
  • $30.00/TB$120.00
    HP 846523-004 4TB SAS 12G Midline
    846523-004
    4TB · SAS-12G
    Refurb
  • $30.00/TB$359.99
    HP 12TB SAS 7.2K LFF Enterprise
    MB012000GWWFE
    12TB · SAS-12G · 2 offers
    Refurb
  • $30.63/TB$245.00
    Dell M40TH 8TB SAS 12G 512E
    M40TH
    8TB · SAS-12G
    Refurb
  • $30.90/TB$308.99
    HGST Ultrastar He10 10TB SAS
    HUH721010AL4200
    10TB · SAS-12G
    Refurb
  • $31.96/TB$383.55
    WD Ultrastar 12TB SAS HUH721212AL4200
    HUH721212AL4200
    12TB · SAS-12G · 2 offers
    Refurb
  • $32.75/TB$262.00
    HP 834031-B21 8TB SAS LFF
    834031-B21
    8TB · SAS-12G
    New
  • $33.00/TB$99.00
    HGST HUS724030ALS640 3TB SAS 6G
    HUS724030ALS640
    3TB · SAS-6G
    New
  • $33.25/TB$399.00
    WD Ultrastar 12TB SAS HUH721212AL5204
    HUH721212AL5204
    12TB · SAS-12G
    Refurb
  • $34.25/TB$137.00
    HGST HUS726040ALS210 4TB SAS 12G
    HUS726040ALS210
    4TB · SAS-12G
    New
  • $34.28/TB$548.55
    Seagate Exos 16TB SAS 12G 7.2K
    ST16000NM002G
    16TB · SAS-12G
    Refurb
  • $34.49/TB$68.99
    HP P2000 2TB SAS 6G 7.2K
    AP072B321
    2TB · SAS-6G
    Refurb
  • $35.63/TB$285.00
    Dell 8TB SAS 12G 512e 3.5
    ST8000NM0075
    8TB · SAS-12G
    Refurb
  • $36.13/TB$289.00
    HGST Ultrastar He8 8TB SAS 12G NAS
    HUH728080AL5200
    8TB · SAS-12G · 2 offers
    New
  • $37.27/TB$447.24
    WD Ultrastar 12TB SAS HUH721212AL5200
    HUH721212AL5200
    12TB · SAS-12G
    Refurb
  • $37.99/TB$37.99
    Seagate Dell 9W5WV 1TB SAS 2.5
    ST91000640SS
    1TB · SAS-6G
    Refurb
  • $38.45/TB$384.45
    HGST Ultrastar He10 10TB SAS
    HUH721010AL4200
    10TB · SAS-12G
    New
  • $38.62/TB$308.99
    WD Ultrastar 8TB SAS
    8TB · SAS-12G
    Refurb
  • $39.58/TB$118.75
    HP 653959-001 3TB SAS 6G
    653959-001
    3TB · SAS-6G
    New
  • $40.00/TB$48.00
    Seagate 1.2TB 10K SAS 12G 2.5
    ST1200MM0129
    1.2TB · SAS-12G
    Refurb
  • $40.00/TB$160.00
    Dell 202V7 4TB SAS 6G Near Line
    202V7
    4TB · SAS-6G
    New
  • $40.10/TB$561.45
    WD Ultrastar 14TB SAS
    WUH721414AL5204
    14TB · SAS-12G · 2 offers
    New
  • $40.60/TB$406.00
    WD Ultrastar 10TB SAS HUH721010AL5204
    HUH721010AL5204
    10TB · SAS-12G
    Refurb
  • $41.45/TB$829.00
    Seagate Exos X20 20TB SAS
    ST20000NM003D
    20TB · SAS-12G
    Refurb
  • $41.50/TB$249.00
    HGST HUS726060AL5210 6TB SAS 12G
    HUS726060AL5210
    6TB · SAS-12G
    New
  • $42.41/TB$254.45
    HP 6TB SAS Midline LFF Enterprise
    861754-B21
    6TB · SAS-12G
    New
  • $42.50/TB$425.00
    HGST Ultrastar He10 10TB SAS 12G
    HUH721010AL5200
    10TB · SAS-12G · 2 offers
    New
  • $43.48/TB$434.75
    Seagate Enterprise Capacity 10TB SAS 12G
    ST10000NM0096
    10TB · SAS-12G · 2 offers
    New
  • $43.70/TB$524.45
    WD Ultrastar 12TB SAS HUH721212AL4201
    HUH721212AL4201
    12TB · SAS-12G
    New
  • $44.17/TB$53.00
    HGST 1.2TB 10K SAS 12G 2.5
    HUC101212CSS600
    1.2TB · SAS-12G · 2 offers
    Refurb
  • $45.00/TB$360.00
    Dell M40TH 8TB SAS 12G 512E
    M40TH
    8TB · SAS-12G
    New
  • $45.50/TB$364.00
    WD Ultrastar 8TB SAS
    8TB · SAS-12G
    Refurb
  • $45.83/TB$55.00
    HP 781578-001 1.2TB 12G SAS 10K
    781578-001
    1.2TB · SAS-12G
    New
  • $48.33/TB$57.99
    Dell 36RH9 1.2TB 10K SAS 6G
    36RH9
    1.2TB · SAS-6G
    New
  • $49.12/TB$392.99
    HGST Ultrastar He8 8TB SAS 12G
    HUH728080AL5200
    8TB · SAS-12G
    Refurb
  • $49.58/TB$595.00
    HGST 12TB SAS 12G 7.2K
    HUH721212AL4200
    12TB · SAS-12G
    New
  • $49.75/TB$199.00
    Seagate Constellation ES 4TB SAS 6G
    ST4000NM0023
    4TB · SAS-6G
    New
  • $49.99/TB$59.99
    Dell 1.2TB 2.5 10K SAS 12G
    89D42
    1.2TB · SAS-12G
    Refurb
  • $51.25/TB$205.00
    Seagate Enterprise Capacity 4TB SAS 12G 512n
    ST4000NM0025
    4TB · SAS-12G
    New
  • $51.67/TB$62.00
    HP 781578-001 1.2TB 12G SAS 10K SFF
    781578-001
    1.2TB · SAS-12G
    Refurb
  • $52.08/TB$625.00
    Seagate Exos 12TB SAS 12G 7200RPM
    ST12000NM002G
    12TB · SAS-12G
    New
  • $52.43/TB$419.45
    WD Ultrastar 8TB SAS
    8TB · SAS-12G
    New
  • $53.00/TB$212.00
    HP 846523-004 4TB SAS 12G Midline
    846523-004
    4TB · SAS-12G
    New
  • $54.17/TB$65.00
    HP 781518-B21 1.2TB 12G SAS 10K
    781518-B21
    1.2TB · SAS-12G
    Refurb
  • $55.00/TB$110.00
    HP P2000 2TB SAS 6G 7.2K
    AP072B321
    2TB · SAS-6G
    New
  • $56.03/TB$784.45
    WD Ultrastar 14TB SAS
    14TB · SAS-12G
    New
  • $58.33/TB$699.99
    Synology HAS5300 12TB SAS
    HAS5300-12T
    12TB · SAS-12G
    New
  • $59.38/TB$475.00
    Dell 8TB SAS 12G 512e 3.5
    ST8000NM0075
    8TB · SAS-12G
    New
  • $60.49/TB$483.94
    WD Ultrastar 8TB SAS
    8TB · SAS-12G
    New
  • $65.00/TB$65.00
    Dell 1TB NL SAS 12G 2.5
    56M6W
    1TB · SAS-12G
    Refurb
  • $66.67/TB$120.00
    Toshiba 1.8TB 10K SAS 12G 2.5
    AL15SEB18EQ
    1.8TB · SAS-12G
    Refurb
  • $70.83/TB$85.00
    Seagate 1.2TB 10K SAS 12G 2.5
    ST1200MM0129
    1.2TB · SAS-12G
    New
  • $71.04/TB$852.50
    HP 12TB SAS 7200RPM LFF Enterprise
    MB012000GWWFE
    12TB · SAS-12G · 2 offers
    New
  • $75.00/TB$90.00
    Dell HUC101212CSS600 1.2TB 10K SAS 6G
    HUC101212CSS600
    1.2TB · SAS-6G
    New
  • $80.56/TB$145.00
    Dell VJ7CD 1.8TB 10K SAS 12G 512E
    VJ7CD
    1.8TB · SAS-12G
    New
  • $82.50/TB$99.00
    Dell WXPCX 1.2TB 10K SAS 12G
    WXPCX
    1.2TB · SAS-12G
    New
  • $85.56/TB$154.00
    HP 791034-B21 1.8TB SAS 12G 10K Enterprise
    791034-B21
    1.8TB · SAS-12G
    Refurb
  • $104.17/TB$125.00
    HP 781518-B21 1.2TB 12G SAS 10K
    781518-B21
    1.2TB · SAS-12G
    New

Nearline SAS Price Per TB

Nearline SAS is the capacity tier of the SAS family - 7,200 RPM drives built for bulk storage rather than the 10K and 15K units built for transactional work - and it is where the cost per terabyte on this page is decided. The table above carries the current figure for every drive we hold in stock, new and recertified tracked separately, refreshed with our price data rather than written into this page.

For where that sits against 2024 and 2026, the hard drive price forecast carries a then-versus-now anchors table that labels every row by provenance - reported figures from published coverage, measured figures from our own tracked floor. A price per terabyte means little without knowing what the same class of drive cost before, and it means less again if the two numbers came from different kinds of source without saying so.

These are also the drives that fill a used enterprise rack disk shelf - a NetApp or HP JBOD holds 12-25 of them behind one host, and the shelf pages have the live complete-build cost per model.

SAS HDD Buyer's Guide

⚡

SAS-6G vs SAS-12G

At 7200 RPM a single HDD saturates around 200 MB/s - well under the SAS-6G ceiling of 600 MB/s. Refurbished SAS-6G drives are significantly cheaper with no measurable throughput penalty for sequential workloads.

🔄

10K vs 7.2K RPM

10K-RPM 2.5" drives (OLTP tier) deliver lower latency for transactional databases. 7.2K nearline 3.5" drives offer far more capacity per dollar and suit warm/cold storage, backups, and media libraries.

🛡️

CMR Guaranteed

Every SAS enterprise drive uses Conventional Magnetic Recording (CMR). There is zero risk of SMR write-amplification, making all SAS drives safe for ZFS, RAID, and sustained random writes.

♻️

Refurb Risk Guide

Datacenter pulls typically have low power-on hours. Look for sellers offering a minimum 3-month warranty. Run a full SMART self-test on arrival and check reallocated sector counts before deploying.

Whether these prices are rising or falling is measured model for model on hard drive price trends, and every category on all price trends.

SAS hard drives we no longer see in stock

Out of stock on Amazon, or no longer listed. Each page keeps its specifications and points to what is in stock now; none of them has a current price.

All SAS hard drives we track

94 product pages, 66 with a live offer today. Each page carries the listing's specifications, its condition and provenance, and in-stock alternatives. Prices are on the tables above, not in this index.

Common problems

Troubleshooting pages that lead here. Each starts with the diagnosis and says whether hardware is the fix.

  • Why won't my server see or boot a 4Kn SAS drive? · A 4Kn drive presents 4096-byte logical sectors with no 512-byte emulation, Western Digital warns that older systems may not be compatible, and Dell, Intel and Supermicro each say 4K drives boot only in UEFI mode.
  • How do I fix SAS drives stuck at 520-byte sectors? · A 520-byte sector is a 512-byte sector with 8 bytes of checksum or protection information appended; NetApp's own patent describes 520-byte sectors used this way, and Linux rejects 520 as a block size.
  • Why is my SAS hard drive not detected by the HBA? · When a SAS drive does not appear anywhere, check four things before you blame the drive: the port (Seagate states SAS drives cannot be plugged into SATA controllers), the cable (multi-lane end at the controller, SFF-8482 end at the drive, and the right direction into a backplane), the power-disable pin P3 (a supply holding 3.3V on it keeps a drive with that feature in reset, so it never spins up) and the controller mode (many SAS RAID controllers want a drive assigned to an array before the operating system sees it).
  • All server and storage problems →

Frequently Asked Questions

SAS-12G (12Gb/s) offers double the interface bandwidth of SAS-6G (6Gb/s). However, at 7200 RPM the mechanical drive speed is the real bottleneck, so for nearline storage workloads the practical performance difference is minimal. SAS-6G refurb drives are significantly cheaper and perform identically for most use cases.

SAS drives offer dual-port connectivity (critical for dual-controller storage arrays), higher sustained reliability ratings, and 10K RPM options in 2.5 inch form factor. For single-controller NAS or backup targets, SATA usually offers better $/TB. For enterprise SAN environments, SAS is the standard.

No. SAS drives require a SAS HBA or SAS backplane. However, SATA drives can be used in SAS backplanes (SAS is backward compatible with SATA). Check your HBA or RAID controller compatibility before purchasing.

Enterprise SAS drives pulled from hyperscale datacenters are typically low-hours and high-quality. Look for sellers offering minimum 90-day warranty, verify SMART data on arrival, and avoid 10K RPM 2.5 inch drives over 5 years old as bearings wear faster at high RPM.

Common Issues & Troubleshooting

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.
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