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Global leader in new, refurbished, compatible & discontinued multivendor IT-Hardware, spares and print supplies.
| Part Number: | 857644-B21 |
|---|---|
| Manufacturer: | HPE |
| Backup & Storage: | Server Hard Drive |
| Model: | DL360 Gen10/Gen9, DL380 Gen10/Gen9, ML350 Gen9 |
| Description: | Buy HPE 857644-B21 10TB 7.2K 3.5" SAS HDD. Genuine part with fast worldwide shipping from Euroland IT Store UK. |
| Availability: | In Stock |
The HPE 857644-B21 is the official option kit for a 10TB large form factor hard drive with a 12Gb/s SAS interface, a 7,200 rpm spindle and a SmartCarrier (SC) tray already fitted. Hewlett Packard Enterprise lists it as a Business Critical drive, the class formerly called Midline, built for high capacity storage in HPE ProLiant servers and LFF disk enclosures.
It suits IT teams who need a lot of space per bay for file shares, backup targets, video archives and other bulk data. In one sentence: 10TB, SAS 12G, 7.2K rpm, 3.5in LFF, SC carrier, helium filled, 512e sectors and Digitally Signed Firmware.
You can order this drive from Euroland IT Store in New and Refurbished condition, subject to current stock.
| Specification | Details |
|---|---|
| Manufacturer | HPE |
| Option part number | 857644-B21 |
| Spare part number | 857965-001 |
| Capacity | 10TB |
| Interface | SAS 12Gb/s |
| Rotational speed | 7,200 rpm |
| Form factor | 3.5in large form factor (LFF) |
| Carrier | SC SmartCarrier, hot-plug |
| Drive class | Business Critical (Midline) |
| Sector format | 512e |
| Other | Helium filled, Digitally Signed Firmware |
| Condition | New or Refurbished, subject to stock |
In HPE numbering, a code ending in -B21 is the orderable option kit. HPE PartSurfer describes 857644-B21 as a 10TB SAS 12G Business Critical 7.2K LFF SC helium 512e multi vendor drive. Multi vendor means HPE may source the mechanism from more than one disk maker, then load its own firmware and fit its own carrier and label.
Inside the kit, the field replacement part is spare HPE 857965-001. Service engineers often order by the spare number, while buyers expanding a server tend to quote the option number. Both describe the same 10TB SC drive. The exact number matters because HPE also sells a 10TB low profile (LP) version under a different option code, and that carrier will not lock into an SC bay.
Sealing a drive with helium instead of air lets the maker stack more platters in the same 3.5in shell. Helium is thinner than air, so the platters meet less drag and the drive runs with less heat for its capacity. For a 10TB disk that sits in a busy chassis around the clock, that is a practical gain.
The drive uses 512e (512 byte emulation). Internally it writes 4K physical sectors, while presenting 512 byte logical sectors to the host. Current Windows Server, VMware ESXi and Linux releases handle 512e well. Partitions should be 4K aligned, which modern installers do by default, so you avoid extra read and write cycles. If you run an older operating system, check its 512e support before you deploy.
A new unit is the obvious pick for a fresh build or when your internal policy says production storage must be unused stock. It comes as the HPE option with SmartCarrier fitted, ready to slide into an LFF SC bay.
Please check the warranty and packaging details shown on the product page at the time you order.
Refurbished drives make sense when you are keeping an existing Gen9 or Gen10 estate running, replacing a failed disk in a RAID set, or holding a cold spare on the shelf. They cost less than new and match the HPE part number already in your server.
The product page shows the condition grade and the warranty that applies to refurbished stock. Read it before you buy.
HPE PartSurfer lists the matching spare as suitable for Gen8/Gen9 or newer systems. Its where-used records include these platforms:
Before ordering, look at the label on your current drive, confirm your server model and check that your Smart Array controller or HBA firmware is up to date. A server with LP carrier bays needs the LP version instead.
Large drives take longer to rebuild. After you swap a failed 10TB member, the controller copies data back onto it for many hours, and the array is exposed if a second disk fails during that window. RAID 6 or RAID 60 gives two drive fault tolerance and is worth considering at this capacity. Keep a spare on hand so a rebuild can start the same day.
Our customers include server repair shops, resellers, in-house IT departments and managed service providers in every corner of the UK. Condition, warranty, stock and delivery details are on the product page. Carriage is free on mainland UK orders above £100 + VAT. If you want a second opinion, call 0203 209 6002 or contact the team with your server model and the numbers printed on your current drive.
Yes. HPE PartSurfer lists 857965-001 as the spare part inside option kit 857644-B21, so both numbers describe the same 10TB SAS LFF drive with SmartCarrier.
It fits servers with 3.5in SmartCarrier bays and a SAS capable controller, such as the DL360 Gen10 4LFF and DL380 Gen10 LFF models, so check your server model and existing drive label first.
New suits fresh deployments and strict purchasing policies, while Refurbished is a lower cost way to replace a failed disk or keep a spare in an existing server.
The warranty depends on the condition you choose and is shown on the product page, so please check it there before ordering.
Yes, we ship across the UK, and orders over £100 + VAT qualify for free delivery to UK mainland addresses.
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