All 3.5" and 2.5" SAS hard drives ranked by live cost per terabyte: 89 tracked across 1TB - 20TB, the cheapest in stock at $12.50/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.
The lowest $/TB SAS enterprise HDD currently on Amazon US. Sorted from 74 SAS drives tracked across all capacities.
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.
| $/TB ▲ | Brand / Model | Cap | Interface | Tech | Cache | Sector | Wty | Price | Cond. | 90D | Buy | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
👑$12.50 ↓ vs 30d avg | HGST HUS726040ALS210 4TB SAS 12G HUS726040ALS210 Refurb · CMR · | 4TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $49.99 | REFURB | Buy →Details | ▼ | |
$14.99 ~ 30d avg | HP ST31000640SS 1TB SAS ST31000640SS Refurb · CMR · | 1TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $14.99 | REFURB | Buy →Details | ▼ | |
$15.00 ~ 30d avg | HP 695842-001 4TB SAS 6G 695842-001 CMR · | 4TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $59.99 | new | Buy →Details | ▼ | |
$15.13 ↓ vs 30d avg | HGST HUS724030ALS640 3TB SAS 6G HUS724030ALS640 Refurb · CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $45.39 | REFURB | Buy →Details | ▼ | |
$15.68 ~ 30d avg | HGST Ultrastar HUS723030ALS640 3TB SAS 6G HUS723030ALS640 Refurb · CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $47.04 | REFURB | Buy →Details | ▼ | |
$16.00 ↓ vs 30d avg | Seagate Constellation ES.2 3TB SAS Enterprise ST33000650SS Refurb · CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $48.00 | REFURB | Buy →Details | ▼ | |
$17.00 ~ 30d avg | Seagate Constellation ES.2 3TB SAS ST33000650SS Refurb · CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $51.00 | REFURB | Buy →Details | ▼ | |
$18.33 ~ 30d avg | Seagate 3TB Enterprise Capacity SAS 6G ST3000NM0023 Refurb · CMR · | 3TB | SAS-6G 7,200 RPM | CMR | 128MB | 512n | — | $55.00 | REFURB | Buy →Details | ▼ | |
$19.84 ~ 30d avg | HP MB3000FBUCN 3TB SAS 6G MB3000FBUCN Refurb · CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $59.53 | REFURB | Buy →Details | ▼ | |
$20.00 ~ 30d avg | Dell MG03SCA200 2TB SAS 6G MG03SCA200 Refurb · CMR · | 2TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $39.99 | REFURB | Buy →Details | ▼ | |
$20.00 ~ 30d avg | MDD 3TB SAS 6G 7200RPM MD3TSAS12872E Refurb · CMR · 5yr | 3TB | SAS-6G 7,200 RPM | CMR | 128MB | 512n | 5yr | $59.99 | REFURB | Buy →Details | ▼ | |
$21.25 ~ 30d avg | Dell 012GYY 4TB SAS 6G Renewed 012GYY Refurb · CMR · | 4TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $85.00 | REFURB | Buy →Details | ▼ | |
$22.50 ~ 30d avg | Dell DRMYH Compellent 4TB NL SAS Renewed DRMYH Refurb · CMR · | 4TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $89.98 | REFURB | Buy →Details | ▼ | |
$23.00 ~ 30d avg | Seagate ST3000NM0023 3TB SAS 6G 7.2K ST3000NM0023 CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $69.00 | new | Buy →Details | ▼ | |
$23.50 ↓ vs 30d avg | HGST Ultrastar He10 10TB SAS 12G HUH721010AL5200 Refurb · CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $235.00 | REFURB | Buy →Details | ▼ | |
$25.00 ~ 30d avg | MDD 6TB SAS 12G 7200RPM MD6TSAS12872E Refurb · CMR · 5yr | 6TB | SAS-12G 7,200 RPM | CMR | 128MB | 512e | 5yr | $149.99 | REFURB | Buy →Details | ▼ | |
$25.00 ↓ vs 30d avg | Seagate Enterprise Capacity 10TB SAS Helium ST10000NM0096 Refurb · CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $250.00 | REFURB | Buy →Details | ▼ | |
$26.58 ~ 30d avg | WD Ultrastar 12TB SAS HUH721212AL5204 HUH721212AL5204 Refurb · CMR · | 12TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $319.00 | REFURB | Buy →Details | ▼ | |
$26.67 ~ 30d avg | MDD 6TB SAS 12G 7200RPM Renewed MD6TSAS12872E Refurb · CMR · 5yr | 6TB | SAS-12G 7,200 RPM | CMR | 128MB | 512e | 5yr | $159.99 | REFURB | Buy →Details | ▼ | |
$26.99 ~ 30d avg | HP 508011-001 1TB 6G SAS 508011-001 Refurb · CMR · | 1TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $26.99 | REFURB | Buy →Details | ▼ | |
$27.22 ~ 30d avg | MDD 18TB SAS 12G 7200RPM Enterprise MDD18TSAS25672E CMR · 5yr | 18TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $489.99 | new | Buy →Details | ▼ | |
$28.50 ↓ vs 30d avg | WD Ultrastar 14TB SAS WUH721414AL5204 WUH721414AL5204 Refurb · CMR · 5yr | 14TB | SAS-12G 7,200 RPM | CMR | 512MB | 512e | 5yr | $399.00 | REFURB | Buy →Details | ▼ | |
$29.00 ↓ vs 30d avg | HGST 12TB SAS 12G 7.2K HUH721212AL4200 Refurb · CMR · | 12TB | SAS-12G 7,200 RPM | CMR | — | 4Kn | — | $347.99 | REFURB | Buy →Details | ▼ | |
$29.34 ↑ vs 30d avg | Seagate Constellation ES.2 3TB SAS Enterprise ST33000650SS CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $88.02 | new | Buy →Details | ▼ | |
$30.00 ~ 30d avg | Seagate Enterprise Capacity 4TB SAS 12G 512n ST4000NM0025 CMR · 5yr | 4TB | SAS-12G 7,200 RPM | CMR | 128MB | 512n | 5yr | $120.00 | new | Buy →Details | ▼ | |
$30.00 ↓ vs 30d avg | HP 12TB SAS 7.2K LFF Enterprise MB012000GWWFE Refurb · CMR · 5yr | 12TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $359.99 | REFURB | Buy →Details | ▼ | |
$30.63 ↓ vs 30d avg | Dell M40TH 8TB SAS 12G 512E M40TH Refurb · CMR · | 8TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $245.00 | REFURB | Buy →Details | ▼ | |
$30.90 ~ 30d avg | HGST Ultrastar He10 10TB SAS HUH721010AL4200 Refurb · CMR · 5yr | 10TB | SAS-12G | CMR | — | — | 5yr | $308.99 | REFURB | Buy →Details | ▼ | |
$31.25 ~ 30d avg | HGST Ultrastar He8 8TB SAS 12G NAS HUH728080AL5200 Refurb · CMR · 5yr | 8TB | SAS-12G 7,200 RPM | CMR | 128MB | 512e | 5yr | $249.99 | REFURB | Buy →Details | ▼ | |
$31.96 ~ 30d avg | WD Ultrastar 12TB SAS HUH721212AL4200 HUH721212AL4200 Refurb · CMR · | 12TB | SAS-12G 7,200 RPM | CMR | — | 4Kn | — | $383.55 | REFURB | Buy →Details | ▼ | |
$32.44 ~ 30d avg | WD Ultrastar 16TB SAS WUH721816AL5205 WUH721816AL5205 Refurb · CMR · | 16TB | SAS-12G | CMR | — | 512e | — | $519.00 | REFURB | Buy →Details | ▼ | |
$32.75 ~ 30d avg | HP 834031-B21 8TB SAS LFF 834031-B21 CMR · | 8TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $262.00 | new | Buy →Details | ▼ | |
$33.00 ↑ vs 30d avg | HGST HUS724030ALS640 3TB SAS 6G HUS724030ALS640 CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $99.00 | new | Buy →Details | ▼ | |
$33.00 ~ 30d avg | HGST HUS726060ALS641 6TB SAS 6G HUS726060ALS641 Refurb · CMR · | 6TB | SAS-6G 7,200 RPM | CMR | — | 512e | — | $198.00 | REFURB | Buy →Details | ▼ | |
$33.33 ↓ vs 30d avg | WD Ultrastar 12TB SAS HUH721212AL4201 HUH721212AL4201 Refurb · CMR · | 12TB | SAS-12G | CMR | — | 4Kn | — | $399.99 | REFURB | Buy →Details | ▼ | |
$34.00 ~ 30d avg | Seagate Enterprise Capacity 10TB SAS 12G ST10000NM0096 Refurb · CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $340.00 | REFURB | Buy →Details | ▼ | |
$34.25 ↑ vs 30d avg | HGST HUS726040ALS210 4TB SAS 12G HUS726040ALS210 CMR · | 4TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $137.00 | new | Buy →Details | ▼ | |
$34.28 ~ 30d avg | Seagate Exos 16TB SAS 12G 7.2K ST16000NM002G Refurb · CMR · 5yr | 16TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $548.55 | REFURB | Buy →Details | ▼ | |
$34.49 ↓ vs 30d avg | HP P2000 2TB SAS 6G 7.2K AP072B321 Refurb · CMR · | 2TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $68.99 | REFURB | Buy →Details | ▼ | |
$34.73 ~ 30d avg | WD Ultrastar 10TB SAS HUH721010AL5200 HUH721010AL5200 Refurb · CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $347.30 | REFURB | Buy →Details | ▼ | |
$35.63 ↓ vs 30d avg | Dell 8TB SAS 12G 512e 3.5 ST8000NM0075 Refurb · CMR · | 8TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $285.00 | REFURB | Buy →Details | ▼ | |
$36.13 ~ 30d avg | HGST Ultrastar He8 8TB SAS 12G NAS HUH728080AL5200 CMR · 5yr | 8TB | SAS-12G 7,200 RPM | CMR | 128MB | 512e | 5yr | $289.00 | new | Buy →Details | ▼ | |
$36.67 ~ 30d avg | HP 695842-001 4TB SAS 6G LFF 695842-001 CMR · | 4TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $146.66 | new | Buy →Details | ▼ | |
$37.23 ~ 30d avg | Seagate Dell 9W5WV 1TB SAS 2.5 ST91000640SS Refurb · CMR · | 1TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $37.23 | REFURB | Buy →Details | ▼ | |
$39.45 ↑ vs 30d avg | HGST Ultrastar He10 10TB SAS HUH721010AL4200 CMR · 5yr | 10TB | SAS-12G | CMR | — | — | 5yr | $394.45 | new | Buy →Details | ▼ | |
$39.58 ↑ vs 30d avg | HP 653959-001 3TB SAS 6G 653959-001 CMR · | 3TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $118.75 | new | Buy →Details | ▼ | |
$40.00 ~ 30d avg | Seagate 1.2TB 10K SAS 12G 2.5 ST1200MM0129 Refurb · CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $48.00 | REFURB | Buy →Details | ▼ | |
$40.00 ↑ vs 30d avg | Dell 202V7 4TB SAS 6G Near Line 202V7 CMR · | 4TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $160.00 | new | Buy →Details | ▼ | |
$40.60 ~ 30d avg | WD Ultrastar 10TB SAS HUH721010AL5204 HUH721010AL5204 Refurb · CMR · | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | — | $406.00 | REFURB | Buy →Details | ▼ | |
$40.82 ↑ vs 30d avg | WD Ultrastar 14TB SAS WUH721414AL5204 CMR · 5yr | 14TB | SAS-12G 7,200 RPM | CMR | 512MB | 512e | 5yr | $571.45 | new | Buy →Details | ▼ | |
$41.45 ~ 30d avg | Seagate Exos X20 20TB SAS ST20000NM003D Refurb · CMR · 5yr | 20TB | SAS-12G 7,200 RPM | CMR | — | — | 5yr | $829.00 | REFURB | Buy →Details | ▼ | |
$41.50 ~ 30d avg | HGST HUS726060AL5210 6TB SAS 12G HUS726060AL5210 CMR · | 6TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $249.00 | new | Buy →Details | ▼ | |
$42.25 ↑ vs 30d avg | WD Ultrastar 14TB SAS WUH721414AL5204 WUH721414AL5204 CMR · 5yr | 14TB | SAS-12G 7,200 RPM | CMR | 512MB | 512e | 5yr | $591.45 | new | Buy →Details | ▼ | |
$42.50 ↑ vs 30d avg | HGST Ultrastar He10 10TB SAS 12G HUH721010AL5200 CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $425.00 | new | Buy →Details | ▼ | |
$43.18 ↑ vs 30d avg | Seagate Enterprise Capacity 10TB SAS 12G ST10000NM0096 CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $431.75 | new | Buy →Details | ▼ | |
$43.20 ↑ vs 30d avg | WD Ultrastar 8TB SAS Refurb · CMR · | 8TB | SAS-12G | CMR | — | — | — | $345.59 | REFURB | Buy →Details | ▼ | |
$43.24 ~ 30d avg | HP 6TB SAS Midline LFF Enterprise 861754-B21 CMR · 5yr | 6TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $259.45 | new | Buy →Details | ▼ | |
$43.63 ~ 30d avg | WD Ultrastar 8TB SAS Refurb · CMR · | 8TB | SAS-12G | CMR | — | — | — | $349.00 | REFURB | Buy →Details | ▼ | |
$44.17 ↓ vs 30d avg | Dell HUC101212CSS600 1.2TB 10K SAS 6G HUC101212CSS600 Refurb · CMR · | 1.2TB | SAS-6G 10,000 RPM | CMR | — | 512e | — | $53.00 | REFURB | Buy →Details | ▼ | |
$44.54 ↑ vs 30d avg | WD Ultrastar 12TB SAS HUH721212AL4201 HUH721212AL4201 CMR · | 12TB | SAS-12G | CMR | — | 4Kn | — | $534.45 | new | Buy →Details | ▼ | |
$45.00 ~ 30d avg | HGST 1.2TB 10K SAS 12G 2.5 HUC101212CSS600 CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $54.00 | new | Buy →Details | ▼ | |
$45.00 ↑ vs 30d avg | Dell M40TH 8TB SAS 12G 512E M40TH CMR · | 8TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $360.00 | new | Buy →Details | ▼ | |
$45.83 ~ 30d avg | HP 781578-001 1.2TB 12G SAS 10K 781578-001 CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $55.00 | new | Buy →Details | ▼ | |
$45.83 ↓ vs 30d avg | HP 781518-B21 1.2TB 12G SAS 10K 781518-B21 Refurb · CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $55.00 | REFURB | Buy →Details | ▼ | |
$45.95 ↑ vs 30d avg | WD Ultrastar 10TB SAS HUH721010AL5200 HUH721010AL5200 CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $459.45 | new | Buy →Details | ▼ | |
$46.13 ~ 30d avg | Toshiba MG08 8TB MG08SDA800E CMR · 5yr | 8TB | SAS-12G 7,200 RPM | CMR | — | — | 5yr | $369.00 | new | Buy →Details | ▼ | |
$47.45 ↑ vs 30d avg | Seagate Enterprise Capacity 10TB SAS Helium ST10000NM0096 CMR · 5yr | 10TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $474.45 | new | Buy →Details | ▼ | |
$48.33 ~ 30d avg | Dell 36RH9 1.2TB 10K SAS 6G 36RH9 CMR · | 1.2TB | SAS-6G 10,000 RPM | CMR | — | 512e | — | $57.99 | new | Buy →Details | ▼ | |
$49.12 ~ 30d avg | HGST Ultrastar He8 8TB SAS 12G HUH728080AL5200 Refurb · CMR · 5yr | 8TB | SAS-12G 7,200 RPM | CMR | 128MB | 512e | 5yr | $392.99 | REFURB | Buy →Details | ▼ | |
$49.54 ↑ vs 30d avg | Seagate Exos 12TB SAS 12G 7200RPM ST12000NM002G CMR · 5yr | 12TB | SAS-12G 7,200 RPM | CMR | 256MB | 512e | 5yr | $594.45 | new | Buy →Details | ▼ | |
$49.75 ↑ vs 30d avg | Seagate Constellation ES 4TB SAS 6G ST4000NM0023 CMR · | 4TB | SAS-6G 7,200 RPM | CMR | 128MB | 512e | — | $199.00 | new | Buy →Details | ▼ | |
$51.67 ~ 30d avg | HP 781578-001 1.2TB 12G SAS 10K SFF 781578-001 Refurb · CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $62.00 | REFURB | Buy →Details | ▼ | |
$53.00 ↑ vs 30d avg | HP 846523-004 4TB SAS 12G Midline 846523-004 CMR · | 4TB | SAS-12G 7,200 RPM | CMR | — | 512n | — | $212.00 | new | Buy →Details | ▼ | |
$54.62 ↑ vs 30d avg | HGST 12TB SAS 12G 7.2K HUH721212AL4200 CMR · | 12TB | SAS-12G 7,200 RPM | CMR | — | 4Kn | — | $655.49 | new | Buy →Details | ▼ | |
$54.99 ~ 30d avg | Dell 1.2TB 2.5 10K SAS 12G 89D42 Refurb · CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $65.99 | REFURB | Buy →Details | ▼ | |
$55.00 ↑ vs 30d avg | HP P2000 2TB SAS 6G 7.2K AP072B321 CMR · | 2TB | SAS-6G 7,200 RPM | CMR | — | 512n | — | $110.00 | new | Buy →Details | ▼ | |
$59.38 ↑ vs 30d avg | Dell 8TB SAS 12G 512e 3.5 ST8000NM0075 CMR · | 8TB | SAS-12G 7,200 RPM | CMR | — | 512e | — | $475.00 | new | Buy →Details | ▼ | |
$59.91 ~ 30d avg | Synology HAS5300 12TB SAS HAS5300-12T CMR · 5yr | 12TB | SAS-12G 7,200 RPM | CMR | — | — | 5yr | $718.92 | new | Buy →Details | ▼ | |
$61.74 ↑ vs 30d avg | WD Ultrastar 8TB SAS CMR · | 8TB | SAS-12G | CMR | — | — | — | $493.94 | new | Buy →Details | ▼ | |
$65.00 ~ 30d avg | Dell 1TB NL SAS 12G 2.5 56M6W Refurb · CMR · | 1TB | SAS-12G 7,200 RPM | CMR | — | 512n | — | $65.00 | REFURB | Buy →Details | ▼ | |
$66.67 ↑ vs 30d avg | Toshiba 1.8TB 10K SAS 12G 2.5 AL15SEB18EQ Refurb · CMR · | 1.8TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $120.00 | REFURB | Buy →Details | ▼ | |
$70.83 ↑ vs 30d avg | Seagate 1.2TB 10K SAS 12G 2.5 ST1200MM0129 CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $85.00 | new | Buy →Details | ▼ | |
$71.04 ↑ vs 30d avg | HP 12TB SAS 7200RPM LFF Enterprise MB012000GWWFE CMR · 5yr | 12TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $852.50 | new | Buy →Details | ▼ | |
$80.55 ~ 30d avg | Dell VJ7CD 1.8TB 10K SAS 12G 512E VJ7CD CMR · | 1.8TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $144.99 | new | Buy →Details | ▼ | |
$81.67 ↑ vs 30d avg | Dell HUC101212CSS600 1.2TB 10K SAS 6G HUC101212CSS600 CMR · | 1.2TB | SAS-6G 10,000 RPM | CMR | — | 512e | — | $98.00 | new | Buy →Details | ▼ | |
$82.50 ~ 30d avg | Dell WXPCX 1.2TB 10K SAS 12G WXPCX CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $99.00 | new | Buy →Details | ▼ | |
$85.56 ↓ vs 30d avg | HP 791034-B21 1.8TB SAS 12G 10K Enterprise 791034-B21 Refurb · CMR · 5yr | 1.8TB | SAS-12G 10,000 RPM | CMR | — | 512e | 5yr | $154.00 | REFURB | Buy →Details | ▼ | |
$92.92 ↑ vs 30d avg | HP 12TB SAS 7.2K LFF Enterprise MB012000GWWFE CMR · 5yr | 12TB | SAS-12G 7,200 RPM | CMR | — | 512e | 5yr | $1,114.99 | new | Buy →Details | ▼ | |
$104.17 ↑ vs 30d avg | HP 781518-B21 1.2TB 12G SAS 10K 781518-B21 CMR · | 1.2TB | SAS-12G 10,000 RPM | CMR | — | 512e | — | $125.00 | new | Buy →Details | ▼ |
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.
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-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.
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.
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.
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.