Capacity and Performance
Capacity and performance are two important aspects to consider when evaluating a hard drive.
Capacity refers to the amount of storage space available on the drive, measured in units such as bytes, gigabytes (GB), or terabytes (TB). The HPE 857644-H21 hard drive has a capacity of 10TB, which provides a large amount of storage space for storing large amounts of data.
Performance refers to how well the drive can access and transfer data. The speed of a hard drive is typically measured by its rotational speed, measured in revolutions per minute (RPM). The HPE 857644-H21 hard drive has a rotational speed of 7.2K RPM, which is considered a midline speed.
Data transfer rate is another aspect of performance, which refers to the speed at which data can be transferred between the drive and the computer. The HPE 857644-H21 hard drive has a data transfer rate of 12 Gbps SAS, which is considered a fast transfer rate.
Random Access Time (RAND) which is the time it takes for the drive to find and retrieve a specific piece of data. Lower RAND values indicate better performance.
SAS Interface and Connectivity
SAS (Serial Attached SCSI) is a type of interface and communication protocol used for connecting hard drives and other storage devices to a computer. SAS provides faster data transfer rates and improved scalability compared to other interface types such as SATA.
The HPE 857644-H21 hard drive has a SAS-12 Gbps interface, which supports data transfer rates of up to 12 Gbps. This interface allows for high-speed data transfer between the drive and the computer, making it suitable for use in high-performance computing applications where large amounts of data need to be accessed and processed quickly.
Connectivity refers to the physical and logical connections of the hard drive to the computer. The HPE 857644-H21 hard drive is a single-port drive, which means it can be connected to a single SAS controller or host bus adapter (HBA) in the computer. The drive also supports dual-port connectivity, allowing it to be connected to two SAS controllers or HBAs for increased data transfer performance and redundancy.
In addition, the HPE 857644-H21 hard drive supports the use of SAS expanders, which allow multiple hard drives to be connected to a single SAS controller or HBA, providing increased storage capacity and scalability.
Drive Type and Form Factor
Drive type refers to the technology used to store data on the hard drive. The HPE 857644-H21 hard drive uses a SAS (Serial Attached SCSI) technology, which is a type of interface and communication protocol used for connecting hard drives and other storage devices to a computer. SAS provides faster data transfer rates and improved scalability compared to other interface types such as SATA.
Form factor refers to the physical dimensions and layout of the hard drive. The HPE 857644-H21 hard drive has a 3.5-inch form factor, which is a standard size for internal hard drives and commonly used in servers and storage arrays. This form factor provides a high storage capacity in a compact size.
The 3.5-inch form factor also allows for a larger number of platters and heads, which results in more storage capacity and faster data transfer rates. Additionally, it is the most common form factor for enterprise-class hard drives, which are optimized for high-performance, high-reliability, and high-capacity storage.
- Manufacture: HPE
- MPN: 857644-H21
- Type: Hard Drive - Midline
- HDD Type: SAS-12GBPS
- Spare Part Number: 857965-001
- Model Number: MB010000JWAYK
- Assembly Number: 857642-002
- HPE GPN: 857652-002
- SKU: 857644-H21
- Capacity: 10 TB
- Form Factor: 3.5 inch LFF
- Interface: SAS 12GBPS
- Bytes per Sector: 512
- Rotational Speed: 7200 RPM
- Drive Technology (Fill): Helium
- Plug Type: Hot Plug
- Format Type: 512e
- Carrier Type: Smart Carrier (SC)
- Workload: Midline
- Features: Advanced format 512e, Digitally Signed Firmware
- Bundled with: HPE SmartDrive carrier
Dimension and Weight
- Width : 4 Inch
- Depth : 5.8 Inch
- Height : 1 Inch
- Weight : 1.52 Lbs
- Transfer Rate Synchronous (Max): 12Gb/sec
- Single Track Seek Time: 0.22 ms
- Average Seek Time: 8.00 ms
- Full Stroke Seek Time: 16.00 ms
- OD Media Rate, Max Sequential Throughput (MiB/s): 235
- 128Kib Random 50% RD/ 50% WT (IOPs): 115
- HPE ProLiant DL Series: DL120 Gen9 (3.5 inch), DL120 Gen9 Entry (3.5 inch), DL180 Gen9 (3.5 inch), DL180 Gen9 Base (3.5 inch),
- DL180 Gen9 Entry (3.5 inch), DL180 Gen9 Storage (3.5 inch), DL20 Gen9 (3.5 inch), DL20 Gen9 Entry (3.5 inch),
- DL20 Gen9 Performance (3.5 inch), DL20 Gen9 Solution (3.5 inch), DL360 Gen10 (3.5 inch), DL360 Gen10 Base (3.5 inch),
- DL360 Gen10 Entry (3.5 inch), DL360 Gen10 High Performance (3.5 inch), DL360 Gen10 Low (3.5 inch), DL360 Gen10 Performance (3.5 inch),
- HPE ProLiant ML Series: ML110 Gen9 (3.5 inch), ML110 Gen9 Base (3.5 inch), ML110 Gen9 Entry (3.5 inch), ML150 Gen9 (3.5 inch), ML150 Gen9 Base (3.5 inch), ML150 Gen9 Entry (3.5 inch), ML150 Gen9 Performance (3.5 inch), ML30 Gen9 Entry (3.5 inch), ML30 Gen9 Solution (3.5 inch
- HPE Enclosures: D3600, D3610
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Other Available Categories For - Hard Drive - SAS-12GBPS
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