HPE 861688-B21 3TB SATA 6G LFF 3.5 HDD

HPE 861688-B21 3TB SATA 6G Midline 7.2K LFF Low Profile Hard Drive

The HPE 861688-B21 is a 3TB Midline hard drive for 3.5in low profile bays. It uses a 6Gb/s SATA interface, turns at 7,200 RPM and ships with digitally signed HPE firmware. HPE PartSurfer names it an HPE 3TB SATA 6G Midline 7.2K LFF LP drive.

Tower servers with non-hot-plug drive cages are the natural home for this option, with the ProLiant ML350 Gen10 the main example in HPE’s records. Office file storage, departmental backups and small virtual machine stores are typical uses.

Euroland IT Store stocks the 861688-B21 in New and Refurbished condition, subject to current stock.

HPE 861688-B21 Technical Specifications

What Is The HPE 861688-B21?

861688-B21 is the order code for the complete option. Behind it sits spare 862131-001, the part HPE support sends under warranty or contract. PartSurfer’s where-used list for that spare includes the HPE 3TB 6G SATA 7.2K LFF MDL LP drive itself, a remanufactured version and several ML350 Gen10 server builds.

HPE also sells a 3TB SATA drive under 861693-B21, but that one comes in a hot-plug SmartCarrier. The two share capacity and speed, yet they suit different bays. Ordering by the exact option number makes sure you get the low profile version.

Low Profile Bays In Tower Servers

In a non-hot-plug cage, the drive is secured with screws or rails and connected to a fixed backplane or cable. There is no front tray or release lever. You open the case, power down, and fit the disk inside the chassis.

This design suits towers in offices where drive swaps are rare and planned. It saves cost and noise compared with a full hot-plug backplane. The catch is that any swap means downtime, so plan maintenance windows with that in mind.

New HPE 861688-B21

Buy New when you are adding disks to a fresh ML350 build or when your policy calls for unused parts. Condition and warranty for New units appear on the product page.

Refurbished HPE 861688-B21

Refurbished drives help owners of existing towers restore a failed mirror or RAID 5 set without overspending. They are also handy as cold spares. Check the listing for the grade and the warranty provided.

Compatibility

• HPE ProLiant ML350 Gen10 LFF configurations (PartSurfer)
• HPE ProLiant ML350 Gen10 non-hot-plug CTO builds, also named in PartSurfer
• HPE ProLiant ML110 Gen10, as listed by a parts specialist

Server builds differ, so confirm that your machine has low profile LFF bays and check the label on the drive you are replacing.

Associated Part Numbers

The spare for this option is covered on our HPE 862131-001 page. If you need a different capacity in the same family style, we list HPE 861681-B21 and HPE 862132-001 as 2TB SATA 6G 7.2K 3.5in drives, and HPE 861683-B21 as a 4TB SATA 6G version. An older 3TB 3.5in drive using SAS 6G is HPE 625031-B21. Confirm the mounting style of each before ordering. You can also browse the HPE brand range.

Is It The Correct Replacement?

1. Find 861688-B21 or 862131-001 on the drive you are replacing.
2. Confirm the bay is low profile, not a hot-plug tray.
3. Check the port is SATA or a SAS controller that accepts SATA drives.
4. Match the 3TB size of the other array members.
5. Have the server model to hand when you contact us.

Booting From A 3TB Disk

Any drive larger than 2.2TB needs a GPT partition table to use its full space. If this disk will hold the operating system, the server should boot in UEFI mode. In legacy BIOS mode, a large boot volume may be limited or refused. For data-only drives this matters less, but GPT is still the right choice.

Keeping The Array Balanced

Try to keep every member of a logical drive the same size, speed and interface. A 3TB SATA LP replacement in a set of 3TB SATA LP drives rebuilds cleanly and performs evenly. If you ever need to grow beyond 3TB per disk, replace each member in turn and extend the array once the last one has rebuilt.

Buying HPE 861688-B21 in the UK

Euroland supplies UK businesses, IT departments, resellers and repairers. Before ordering this LP 3TB drive, check its listing for condition, cover, stock and dispatch notes. Free shipping to mainland UK addresses applies above £100 + VAT. Share your server model and the numbers on the current drive and we will check the fit, or call 0203 209 6002.

Frequently Asked Questions

Is 861688-B21 hot-plug?

No, 861688-B21 is a low profile drive for non-hot-plug bays; the hot-plug SmartCarrier version of the 3TB SATA drive is sold as 861693-B21.

Which servers is it compatible with?

HPE PartSurfer lists its spare in ProLiant ML350 Gen10 configurations, and a parts specialist also lists the ML110 Gen10.

What is the difference between New and Refurbished stock?

New drives are unused, while Refurbished drives have been in service before and are sold at a lower price.

How do I check the warranty?

The product page shows the warranty attached to each condition.

Can you deliver it in the UK?

Yes, we deliver throughout the UK and offer free mainland shipping on orders over £100 + VAT.