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Seagate 1TB Enterprise Capacity 2.5 Internal Hard Disk Drive SAS 12Gb/s 7200 RPM 128MB Cache Model ST1000NX0323
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Seagate
Seagate 1TB Enterprise Capacity 2.5 Internal Hard Disk Drive SAS 12Gb/s 7200 RPM 128MB Cache Model ST1000NX0323
  • Average Latency: 4.16ms
  • Height (maximum): 15mm
  • Width (maximum): 70.10mm
  • Length (maximum): 100.46mm
  • Model #: ST1000NX0323
Seagate 1TB Enterprise Capacity 2.5 Internal Hard Disk Drive SAS 12Gb/s 7200 RPM 128MB Cache Model ST1000NX0363
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Seagate
Seagate 1TB Enterprise Capacity 2.5 Internal Hard Disk Drive SAS 12Gb/s 7200 RPM 128MB Cache Model ST1000NX0363
  • Average Latency: 4.16ms
  • Height (maximum): 15mm
  • Width (maximum): 70.10mm
  • Length (maximum): 100.45mm
  • Model #: ST1000NX0363
Seagate Enterprise Capacity 1TB SATA 6.0Gb/s 7200 RPM 128MB Cache 2.5" Internal Hard Disk Drive Model ST1000NX0303
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Seagate Enterprise Capacity 1TB SATA 6.0Gb/s 7200 RPM 128MB Cache 2.5" Internal Hard Disk Drive Model ST1000NX0303
  • NAND Flash Memory Type: Hard Drive
  • Average Latency: 4.16ms
  • Features: Design Small and Deliver BIG - 2.5-Inch Nearline Drive - Up to 2TB capacity in 15mm z-height, 2.5-inch form factor for space-constrained data centers - Designed for high-density storage solutions requiring environmentally sound low power consumption and low weight for maximum storage efficiency - Choose 12Gb/s SAS for high data integrity, scalability and
  • Usage: For Enterprise Storage
  • Model #: ST1000NX0303
Dell 8JRN4 - 900GB 2.5" SAS 10K 6Gb/s HS Hard Drive
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DELL
Dell 8JRN4 - 900GB 2.5" SAS 10K 6Gb/s HS Hard Drive
  • Usage: Ideal for Servers
  • Model #: 8JRN4
Dell Y4MWH - Dell 600GB 2.5" SAS 10K 6Gb/s Hard Drive
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DELL
Dell Y4MWH - Dell 600GB 2.5" SAS 10K 6Gb/s Hard Drive
  • NAND Flash Memory Type: SLC NAND
  • Average Latency: 6Gb/s
  • Model #: Y4MWH
Western Digital WD VelociRaptor WD1000CHTZ 1TB 10000 RPM 64MB Cache SATA 6.0Gb/s 2.5" Enterprise Hard Drive Bare Drive
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Western Digital WD VelociRaptor WD1000CHTZ 1TB 10000 RPM 64MB Cache SATA 6.0Gb/s 2.5" Enterprise Hard Drive Bare Drive
  • Height (maximum): 15mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.45mm
  • Model #: WD1000CHTZ
Dell T6TWN - 1.2TB 2.5" SAS 10K 6Gb/s HS Hard Drive
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DELL
Dell T6TWN - 1.2TB 2.5" SAS 10K 6Gb/s HS Hard Drive
  • Usage: Ideal for Servers
  • Model #: T6TWN
WD Scorpio Blue WD2500BPVT 250GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
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Refurbished WD Scorpio Blue WD2500BPVT 250GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
  • Average Latency: 5.5ms
  • Height (maximum): 9.5mm
  • Width (maximum): 69.75mm
  • Length (maximum): 100.3mm
  • Model #: WD2500BPVT
Seagate ST600MM0006 600GB 10000 RPM 64MB Cache SAS 6Gb/s 2.5" Savvio 10KRpm
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TOSHIBA MK1401GRRB 147GB 15000 RPM 32MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive
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TOSHIBA MK1401GRRB 147GB 15000 RPM 32MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 15mm
  • Width (maximum): 69.85 mm
  • Length (maximum): 100.45 mm
  • Model #: MK1401GRRB
Seagate EE25.2 Series ST940817AM 40GB 5400 RPM 8MB Cache PATA 2.5" Extreme Class Internal Hard Drive Bare Drive
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Seagate EE25.2 Series ST940817AM 40GB 5400 RPM 8MB Cache PATA 2.5" Extreme Class Internal Hard Drive Bare Drive
  • Average Latency: 5.6ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: ST940817AM
Seagate Savvio 15K.2 ST9146852SS 146GB 15000 RPM 16MB Cache SAS 6Gb/s 2.5" Internal Enterprise Hard Drive Bare Drive
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Seagate Savvio 15K.2 ST9146852SS 146GB 15000 RPM 16MB Cache SAS 6Gb/s 2.5" Internal Enterprise Hard Drive Bare Drive
  • Average Latency: 2ms
  • Parts: 5 Years Warranty
  • Labor: 5 Years Warranty
  • Model #: ST9146852SS
Dell 377CF - Dell 300GB 2.5" SAS 15K 12Gb/s Hard Drive
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DELL
Dell 377CF - Dell 300GB 2.5" SAS 15K 12Gb/s Hard Drive
  • Average Latency: 12Gb/s
  • Model #: 377CF
Dell 91K8T - 3TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
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Dell 91K8T - 3TB 3.5" SAS 7.2K 6Gb/s HS Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Usage: Ideal for Servers
  • Model #: 91K8T
  •  
  • $75.99 
  • Free Shipping
IBM 81Y9731 - 1TB 2.5" Near Line SATA 7.2K 6Gb/s HS Hard Drive
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IBM 81Y9731 - 1TB 2.5" Near Line SATA 7.2K 6Gb/s HS Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Usage: Ideal for Servers
  • Model #: 81Y9731
  •  
  • $180.99 
  • Free Shipping
MaxDigital 1TB 5400RPM 64MB Cache (7mm) SATA 6.0Gb/s 2.5" Mobile HDD / Notebook Hard Drive - 2 Year Warranty
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MaxDigital 1TB 5400RPM 64MB Cache (7mm) SATA 6.0Gb/s 2.5" Mobile HDD / Notebook Hard Drive - 2 Year Warranty
  • Height (maximum): 7mm
  • Width (maximum): 70mm
  • Length (maximum): 100.6mm
  • Parts: 2 Years Warranty from Reseller
  • Model #: MD1000GLSA5464S
WL 250GB 8MB Cache 5400RPM SATA 3.0Gb/s 2.5" Internal Laptop Hard Drive w/1-Year Warranty
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WL 250GB 8MB Cache 5400RPM SATA 3.0Gb/s 2.5" Internal Laptop Hard Drive w/1-Year Warranty
  • Height (maximum): 9mm
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: MD2250GSATA
  •  
  • $29.99 
  • Free Shipping
WL 500GB 64MB Cache 5400RPM SATA III (6.0Gb/s) 7mm 2.5" Slim Mobile Hard Drive (PS3 & NoteBook)- w/ 1 Year Warranty
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WL 500GB 64MB Cache 5400RPM SATA III (6.0Gb/s) 7mm 2.5" Slim Mobile Hard Drive (PS3 & NoteBook)- w/ 1 Year Warranty
  • Parts: 1 Year Warranty from Reseller
  • Labor: 1 Year Warranty from Reseller
  • Model #: WL500GLSA6454S
  •  
  • $24.99 
  • Free Shipping
WL 500GB 32MB Cache 5400RPM SATA III (6.0Gb/s) 7mm 2.5" Notebook Hard Drive - 1 Year Warranty
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WL 500GB 32MB Cache 5400RPM SATA III (6.0Gb/s) 7mm 2.5" Notebook Hard Drive - 1 Year Warranty
  • Height (maximum): 7mm
  • Width (maximum): 70mm
  • Length (maximum): 100.6mm
  • Parts: 1 Year Warranty from Reseller
  • Model #: WL500GLSA3254S
  •  
  • $23.99 
  • Free Shipping
Seagate Momentus 5400.6 ST9500325ASG 500GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
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Seagate Momentus 5400.6 ST9500325ASG 500GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
  • Average Latency: 5.6ms
  • Parts: 2 years limited
  • Labor: 2 years limited
  • Model #: ST9500325ASG
HP 655710-B21 1TB 7200 RPM SATA 6.0Gb/s 2.5" SFF SC Midline Hard Drive
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HP 655710-B21 1TB 7200 RPM SATA 6.0Gb/s 2.5" SFF SC Midline Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 15.6 mm
  • Width (maximum): 75.7 mm
  • Length (maximum): 118.7 mm
  • Model #: 655710-B21
WD Red Plus 1TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 16MB Cache 2.5 Inch - WD10JFCX
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WD Red Plus 1TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 16MB Cache 2.5 Inch - WD10JFCX
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 9.5mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.20mm
  • Model #: WD10JFCX
TOSHIBA MK3001GRRB 15000 RPM 32MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive
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TOSHIBA MK3001GRRB 15000 RPM 32MB Cache SAS 6Gb/s 2.5" Enterprise Hard Drive
  • Average Latency: 2ms
  • Height (maximum): 15mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.45mm
  • Model #: MK3001GRRB
HP 599476-001 300GB 10000 RPM SAS 6Gb/s 2.5" Internal Notebook Hard Drive
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  •  
  • $45.99 
  • Free Shipping
Seagate Momentus 7200.4 ST9320423AS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
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Seagate Momentus 7200.4 ST9320423AS 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
  • Average Latency: 4.17ms
  • Height (maximum): 9.5mm
  • Width (maximum): 69.75mm
  • Length (maximum): 100.3mm
  • Model #: ST9320423AS
  • $65.25
  •  
  • $45.00 
  • Save: 31%
  • Free Shipping
Dell 34C6N 320GB 7200 RPM SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive
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  •  
  • $77.99 
  • Free Shipping
Seagate Momentus 5400 ST9640320AS 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
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Seagate Momentus 5400 ST9640320AS 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
  • Average Seek Time: 11ms
  • Average Latency: 5.5ms
  • Parts: 2 years limited
  • Labor: 2 years limited
  • Model #: ST9640320AS
  •  
  • $65.00 
  • Free Shipping
Lenovo 45N7251 160GB 7200 RPM SATA 2.5" Internal Notebook Hard Drive
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  •  
  • $65.99 
  • Free Shipping
Western Digital Scorpio Blue WD7500BPVT 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" 750GB Capacity Internal Notebook Hard Drive
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Western Digital Scorpio Blue WD7500BPVT 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" 750GB Capacity Internal Notebook Hard Drive
  • Flash Memory Capacity: 750GB
  • Parts: 2 years limited
  • Labor: 2 years limited
  • Model #: WD7500BPVT
HP 626162-001-R 1TB 7200 RPM SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive
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  •  
  • $105.99 
  • Free Shipping

Laptop internal hard drives are the most popular of storage devices for laptops on the market. Hard drives vary in storage capacity, data access speeds and form factors. It is critical to establish basic requirements when considering a hard drive. After all, your laptop’s internal hard drive stores all your information, OS and programs. Whether you are looking to replace the hard drive in your general use or work laptop, Newegg has the right hard drive for you.

Laptop Internal Hard Drives Provide Large Data Storing Capacities

Upgrading or getting a new notebook internal hard disk drive offers you an opportunity to increase your storage, especially if you have been struggling with what you already have. Options available have gone from the norm of 500GB to 1TB of storage. Some units can hold as much as 2TB, 4TB, 5TB and higher storage capacities. Modern disks feature integrated controllers with 64 to 128MB data caches that ensure fast access to stored data. Interfaces like SATA allow data transfer rates of up to 6 gigabits per second, while some models feature SAS, SCSI, or Thunderbolt™ interfaces, which meet specific data transfer requirements.

Achieve Improved Performance and Advanced Storage Management

The internal hard disk drive also affects your laptop’s load times and overall performance. Hard drives are responsible for how fast you sift through files, and copy and paste your data. The drives also manage the loading of programs. Hard drives feature one or more spinning magnetic disks for data storage, and multiple moving heads that transfer information between platters. The rotational speed of the spinning disk reads and logs speeds you achieve in real-time. Most laptop and desktop internal hard drives spin at 5,400 to 7,200 revolutions per minute. Hard drives with 10,000 or 15,000RPMs offer fast performance for programs that work with large files. There is the option of purchasing variable-speed drives that use less energy, with speeds running between 5,400 and 7,200RPMs. High-quality hard drives are suitable for programmers, allowing the loading of complex applications. The Multi-Tier Caching technology simplifies data transfers to save users time for other computing tasks.

Standard Form Factors and Connectors for Easy Installation

A hard disk drive comes in two standard form factors: the 3.5-inch drive and the 2.5-inch drive. These measurements refer to the data platter sizes. The 2.5-inch range is smaller, so they can fit in laptops and small portable enclosures like desktop external hard drives and mobile hard disk drive applications. For example, a notebook internal hard drive is a 2.5-inch drive. These 2.5-inch laptop internal hard drives require less power to spin, drawing power from the laptop without using an external power supply. Portability is another advantage of hard drives, so employees can ship them without worrying. Hard drives also come with one connector built-in.  Since 2007, most laptops use the SATA interface that offers simple configuration. A SATA internal hard disk drive works as an external hard drive using hard drive enclosures. Other drives like Mac hard drives have built-in Thunderbolt connections for high-resolution video streaming.

Bestselling Laptop Internal Hard Drives Reviews:

James M.
4/15/2025 2:41:00 AM
WD Internal Laptop Disk Drive 2TB

“ Twice storage over OEM drive for Acer Laptop. ”

WD Blue WD20SPZX 2TB 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" Internal Notebook Hard Drive
Anonymous
3/16/2024 7:17:29 AM
Good Hard Drive

“ This is easy to install and increase the storage capacity of my laptop. ”

Seagate 2TB BarraCuda 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" Laptop Internal Hard Drive ST2000LM015
Eric H.
12/17/2023 6:23:25 PM
Reliable

“ Used for computer backup & media storage, on three laptops, nearly 7x24. ”

Seagate 5TB BarraCuda 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" 15mm Laptop Internal Hard Drive ST5000LM000
viralkumar p.
6/8/2022 4:28:55 PM
WORKS GREAT

“ -OTHER THEN THICKNESS ITS WORKS PERFACTLY INMY LAPTOP. ”

Seagate 5TB BarraCuda 5400 RPM 128MB Cache SATA 6.0Gb/s 2.5" 15mm Laptop Internal Hard Drive ST5000LM000