Enterprise SAS hard drives are designed for storage systems where predictable behavior, hot-swap support, dual-port connectivity and controller-managed operation matter. Modern nearline SAS capacity drives are typically 3.5-inch 7200 RPM models, and current families span from smaller enterprise capacities to 20TB-plus. This page focuses on the capacity class rather than small 10K or 15K performance drives.
For capacity-focused enterprise storage, compare 12Gb/s 3.5-inch nearline SAS drives from Exos, Ultrastar and Toshiba MG, then match the model to your server qualification and sector-format requirements.
See compatible products ↓Current SAS Hard Drives on Amazon 8
Compare 3.5-inch enterprise SAS hard drives that match the capacity and interface on this page. SATA drives, SSDs, trays and accessories are kept separate so you can focus on compatible SAS HDDs.
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Seagate Exos 7E8 ST4000NM005A 4 TB Hard Drive - Internal - SAS (12Gb/s SAS)
4TB · $58.75/TB
HGST HGST Ultrastar 7K4000 4 TB 3.5" 7200 RPM SAS Internal Enterprise Hard Drive 64 MB cache 12Gb/s - HUS724040ALS640 / 0B26885 64 MB Cache 3.5-Inch Internal Bare or OEM Drives 0B26885
4TB · $41.23/TB
Dell 4TB HDD SAS 3,5 Inch 7,2K Near Line, 202V7 (Near Line)
4TB · $40.00/TB
Hpe 846523-004 4TB 7.2K 12G MIDLINE LFF SAS SC Hard Drive
4TB · $53.00/TB
Seagate Exos 7E8 ST6000NM029A 6 TB Hard Drive - Internal - SAS (12Gb/s SAS) - 7200rpm - 512e Format - 5 Year Warranty
6TB · $53.00/TB
HGST Ultrastar 7K6000 4TB 7200 RPM 512e SAS 12Gb/s 128MB Cache 3.5-Inch Enterprise Internal Hard Disk Drive - HUS726040AL5210 (0F22795)
4TB · $44.75/TB
Dell M40TH 8TB 7.2K 12G LFF SAS 512E Hard Drive
8TB · $45.00/TB
Hpe 834031-B21 8TB 7.2K LFF SAS Hard Drive
8TB · $32.75/TB
Enterprise SATA Alternatives 8
These are enterprise SATA HDDs, shown separately so a lower-cost SATA listing is never mistaken for a SAS drive. They can make sense when your server does not require SAS features.
Seagate Exos 7E10 ST4000NM000B - Hard Drive - 4 TB - SATA 6Gb/s | 2 Million Hour MTBF, 550TB Workload Rate, Data Centers, RAID Systems, Cloud Storage
4TB · $69.52/TB
HGST Ultrastar He6 6TB 3.5" SATA 7200 RPM Enterprise Internal Hard Drive with 64Mb Cache - HUS726060ALA640/ 0F18335 64 MB Cache 3.5-Inch Internal Bare or OEM Drives 0F18335
6TB · $22.50/TB
![Toshiba MG09ACA18TE 18 TB Hard Drive - 3.5 Internal - SATA [SATA/600]](https://m.media-amazon.com/images/I/41LMzYKRp7L._SL160_.jpg)
Toshiba MG09ACA18TE 18 TB Hard Drive - 3.5 Internal - SATA [SATA/600]
18TB · $47.06/TB
Seagate Exos 7E8 6TB Internal Hard Drive Enterprise HDD – CMR 3.5 Inch 512E SATA 6Gb/s 7200 RPM 128MB Cache for Enterprise, Data Center – Frustration Free Packaging (ST6000NM021A)
6TB · $54.73/TB
HGST Ultrastar 7K6000 HUS726060ALE610 0F23001 6TB 7200 RPM SATA 3.5" 512E ISE 128MB Cache Enterprise Hard Drive
6TB · $31.67/TB
Toshiba MG09ACA16TE / JP-EC 7,200 RPM, SATA 24x7, RV Sensor, Helium-Filled Hard Drive, 3.5 Inch Enterprise Grade Hard Drive, 16 TB (CMR), Authorized Japanese Dealer, 5 Year Warranty
16TB · $55.88/TB
Seagate Exos 7E8 8TB Enterprise Capacity HDD - 7200 RPM, 256MB Cache, SATA III 6 Gb/s Interface, 3.5" Internal Hard Drive, Crypto Chia Mining - ST8000NM0055
8TB · $46.88/TB
HGST Ultrastar 7K4000 4 TB 3.5" 7200 RPM SATA Internal Enterprise Hard Drive 64 MB Buffer 6.0Gb/s - HUS724040ALA640 / 0F14688 64 MB Cache 3.5-Inch Internal Bare or OEM Drives 0F14688
4TB · $50.00/TB
SAS Hardware You May Also Need 8
A SAS hard drive needs the right host hardware. Compare HBAs and cables only after checking the connector on your controller or backplane.
SAS HBA Card Compatible with LSI 9300-8i IT Mode 9211-8i 9207-8i | PCIe 3.0 x8, 2x 8643 Internal, PCIe SATA Expansion Card, 12Gb/s SAS + SATA 6Gb/s, HBA Controller for ZFS TrueNAS unRAID NAS
SAS infrastructure
SAS HBA Card Compatible with LSI 9300-8i & D3307 IT Mode HBA Controller | SAS3008, PCIe 3.0 x8, 2x SFF-8643 Internal, 12Gb/s SAS + SATA 6Gb/s, PCIe SATA Expansion Card for ZFS TrueNAS unRAID NAS
SAS infrastructure
2-Pack SFF-8643 to 4x SFF-8482 SAS Forward Breakout Cable 0.5m, 12Gbps | Two 0.5m/1.6ft SAS-3 cables with 29+15-pin power connect up to 8 SAS HDDs/SSDs; for LSI 9300-8i and Broadcom 9400-8i
SAS infrastructure
LSI Logic SAS 9300-8e SGL LSI00343
SAS infrastructure
ADCAUDX Mini-SAS to SAS Cable: 0.5M SFF-8087 to SAS SFF-8087 to SFF-8482 | 4X SFF-8482 Connector with SATA Power Adapter Cable (1.6FT)
SAS infrastructure
Sonilco Storage Configurations Cable Mini SAS HDD SFF-8643 to 4 SFF-8482 with 15-pin Power Port Cord (1 Cable, 0.5 Meter / 1.6 Feet)
SAS infrastructure
NGFF Internal Slimline SAS HD SFF-8654 Host Controller to 4 SFF-8482 Target SAS Hard Disk and SATA Power Breakout Fanout Cable (100cm)
SAS infrastructure
CableCreation Mini SAS 26Pin (SFF-8088) Male to 4 SATA 7Pin Female Cable, Mini SAS Host/Controller to 4 SATA Target/Backplane, 1M / 3.3FT
SAS infrastructure
SAS cables are not universal. Confirm the HBA, backplane and connector standard before ordering.
Why this buying advice matters
Nearline SAS combines large-capacity 7200 RPM hard drives with the SAS interface used in enterprise storage. It is designed for capacity-oriented server and array workloads rather than the small, high-RPM SAS disks common in older transactional systems.
That makes the category well suited to backup targets, object storage, large ZFS pools and enterprise shelves where capacity density is important.
What should you compare before buying?
| Option | Best fit | Check before buying |
|---|---|---|
| Standard enterprise SAS | Flexible storage builds | Best when platform accepts retail enterprise drives |
| OEM-qualified SAS | Vendor-supported servers | Best when firmware qualification matters |
| SATA enterprise HDD | Lower complexity | No SAS dual-port path |
| SAS SSD | Higher IOPS | Different cost/performance class |
SAS Drive Fit Finder
Choose the main constraint and get a practical starting point.
Confirm controller, sector format and condition.
SAS hard drive buying guide
What nearline SAS means for a buyer
Why dual-port SAS can matter
SAS drives can expose two ports, allowing redundant paths in storage systems designed for multipathing. That is a meaningful enterprise feature rather than a speed claim for a single spinning disk.
A simple homelab with one HBA may not use this redundancy, but the drive can still fit well when the system is built around SAS backplanes and expanders.
How to choose sector format
Enterprise SAS listings can appear as 512e, 4Kn or vendor-specific formatted variants. The controller and operating environment must support the format you buy.
When replacing a failed drive in an existing array, matching the established sector format and usable capacity is safer than buying only by headline TB size.
Related SAS buying guides
Frequently asked questions
What is nearline SAS?
Nearline SAS generally refers to high-capacity 7200 RPM enterprise HDDs using the SAS interface, optimized for capacity-oriented storage systems.
Why use SAS instead of SATA in a server?
SAS can provide dual-port connectivity, enterprise error handling and better fit with SAS backplanes, expanders and redundant storage designs.
Are SAS HDDs all 12Gb/s now?
Many current enterprise capacity models use 12Gb/s SAS, but older 6Gb/s inventory still exists. Check the exact model.
Can I mix SAS HDDs and SAS SSDs?
A controller may support both, but they serve different performance and cost roles. Plan tiers intentionally rather than treating them as equivalent drives.
Manufacturer and platform references
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