HP 857644-B21 10TB SAS 12G 7.2K 3.5\

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HP 857644-B21 10TB SAS 12G 7.2K 3.5" LFF MDL Helium SC DS 512e HDD

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  • Part Number : 857644-B21
  • Brand : HP

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HP 857644-B21 Manufacturer
Manufacturer
HP
HP 857644-B21 Part Number
Part Number
857644-B21
HP 857644-B21 Capacity
Capacity
10TB
HP 857644-B21 Form Factor
Form Factor
3.5" LFF
HP 857644-B21 Spindle Speed
Spindle Speed
7.2K
HP 857644-B21 Interface
Interface
SAS 12G

HP 857644-B21 Server Compatiblity

Proliant DL Proliant DL20 G9
Proliant DL120 G9
Proliant DL380 G9
Proliant DL380 G10
Proliant DL385 G10
Proliant ML Proliant ML30 G9
Proliant ML110 G9
Proliant ML150 G9

Full HP 857644-B21 Specs

Brand HP
Part Number 857644-B21
Capacity 10TB
Form Factor 3.5" LFF
Spindle Speed 7.2K
Interface SAS 12G
Drive Type HDD
Tray Type Hot Pluggable
Workload Business CriticalMidline (MDL)
Series 512e
Feature Helium
Carrier Type Smart Carrier (SC)
Firmware Digitally Signed Firmware (DS)

9 common question about the HP 857644-B21

What Proliant DL models is the HP 857644-B21 compatible with?

The HP 857644-B21 is compatible with the following models:

  • Proliant DL20 Gen 9
  • Proliant DL120 Gen 9
  • Proliant DL380 Gen 9
  • Proliant DL380 Gen 10
  • Proliant DL385 Gen 10

What Proliant ML models is the HP 857644-B21 compatible with?

The HP 857644-B21 is compatible with the following models:

  • Proliant ML30 Gen 9
  • Proliant ML110 Gen 9
  • Proliant ML150 Gen 9

What does it mean that the HP 857644-B21 is DS and why is it important?

DS refers to Digitally Signed Firmware. The digitally signed storage drives like HP 857644-B21 give you peace of mind knowing they cannot be modified or corrupted by anyone but the official manufacturer. Digitally signed firmware is an effective way to verify your hard drive’s originality before installing it on a server. It’s sometimes also important for your storage drive’s compatibility with other hardware parts and to acquire warranty support.

What does it mean that the HP 857644-B21 is MDL drive?

MDL translates to Midline. It’s a high-capacity storage drive that’s considered a great choice for reliable external storage requirements, it provides higher I/O performance utilizing low power. The MDL storage drives like HP 857644-B21 generally pack high data transmission capacity for robust server performance. HP’s Midline drives are ideal for storing backups and multi-drive configurations as well as demanding workloads like video editing and high-speed data transfers.

What does it mean that the HP 857644-B21 is 3.5" LFF?

LFF refers to a large form factor. The LFF drives like HP 857644-B21 pack a 3.5-inch size which rounds off to an approximate 4-inch width, 5.8-inch length, and 0.8-inch thickness. Note that 3.5 inches are the size of a hard drive’s data platter, not its overall physical size. The 3.5-inch hard drives are commonly used in desktop computers and servers. Their larger form factor makes them unsuitable for hard drive bays of small form factor (2.5-inches).

What does it mean that the HP 857644-B21 is a SAS 12G drive?

SAS stands for Serial-Attached SCSI. It’s a type of storage drive interface with a versatile array of connectors, making it more effective at reading and writing data. Like HP’s 857644-B21, SAS storage drives are particularly useful for continuous computer operations, like servers and workstations. That said, a 12G SAS drive means it has a bandwidth of 12Gbs (gigabits/second) and allows for faster data transfer rates than most traditional storage drives.

What does it mean that the HP 857644-B21 is a Helium drive?

Helium storage drives are filled with Helium gas to minimize air turbulence (certain wind patterns) when their platters spin. These Helium drives, like HP's 857644-B21, operate at cooler temperatures and keep out humidity, so the drive lasts long. Due to all these features, the Helium-filled drives benefit users with a significantly increased data storage size, better reliability, and lower energy consumption. However, Helium must remain sealed inside the hard drive to be fully functional, or humidity may damage the drive.

What does it mean that the HP 857644-B21 is a 512e drive?

512e in a hard drive refers to 512 bytes emulated storage of a physical sector. Emulated storage means what size is shown to an operating system or software if needed but is not a reality. The reality of 512e storage drives is that each sector packs 4096-byte storage, following an advanced standard. However, the purpose of the 512 bytes emulated storage is to ensure the drive works well with operating systems that only support traditional hard drives. The format of these 512e drives, like HP's 857644-B21, is called Advanced Format (AF).

What does it mean that the HP 857644-B21 is a SC (Smart Carrier) drive?

SC refers to Smart Carrier. An SC storage drive, like the HP 857644-B21, means that the drive comes with Smart Carrier. The Smart Drive Carrier feature is only available in newer hard drives (Gen8/Gen9) and warns against data loss when detaching a drive. Moreover, the HP hard drives containing this feature are usually termed HP Smart drives. That said, some regular drives are also turned into Smart drives by installing them into a smart drive carrier (smart carrier converter).
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