507127-B21 is the HPE option part number for 300GB 2.5" SFF 6G Dual Port SAS 10K RPM Hot Plug Hard Drive. It is the number you order when configuring or expanding a server with a 300GB 10,000 rpm SAS drive running at 6 Gb/s. The drive is a 2.5-inch low profile (SFF) unit, 0.591" high and 2.75" wide, and ships with the hot-plug tray attached, so it drops into a supported SFF bay without sourcing a separate carrier. Dual port SAS supports redundant path configurations. Supported platforms span ProLiant BL, DL, ML and SL series generations from G1 through G7, including DL360 G7, DL380 G7 and BL460c G7.
HPE Option Part #: 507127-B21
HPE Spare Part #: 507284-001
HPE Model #: DG0300FAMWN, DG0300FARVV, EG000300JWBHR, EG000300JWEBF, EG000300JWFUQ, EG0300FARTT, EG0300FAWHV, EG0300FAWJD, EG0300FBDBR, EG0300FBDSP, EG0300FBLSE, EG0300FBVFL, EG0300FCSPH, EG0300FCVBF, EG0300JEHLV, EG0300JFCKA
HPE Assembly Part #: 507119-002, 507119-004, 518011-002, 518194-002, 518194-004, 597609-001, 599476-001, 619286-001, 641552-001, 689287-001, 693569-001
PRODUCT SPECIFICATIONS FOR 507127-B21:
- Hard Drive Capacity: 300GB
- Generation: SAS
- External Data Transfer Rate: 6 Gb/s
- Rotational Speed: 10,000 rpm
- Form Factor (Drive): 2.5-inch low profile
- Interface: SAS (Serial Attached SCSI)
- Data Storage Device Type: SAS (Serial Attached SCSI) device
- Hard Drive Device Type: Hard drive for server/storage unit (Hot-plug)
- Height: 0.591"
- Width: 2.75"
- Hotswap Tray: Included (Attached)
COMPATIBLE WITH:
PROLIANT BL SERIES
PROLIANT DL SERIES
PROLIANT SL SERIES
PROLIANT WS SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT 507127-B21
What is the difference between 507127-B21 and 507284-001?
They are the same physical drive with different HPE numbering. This page, 507127-B21, is the option part number, which is what you order to add the drive to a server configuration. 507284-001 is the spare part number, used for service replacement of the same drive. This family also includes 11 assembly revisions, 16 OEM drive models, two generic part numbers and one alternate part number, all shown in the cross-reference block on this page. An assembly part number identifies a specific build revision of the drive and its carrier; an OEM model number is the manufacturer's own drive designation printed on the label.
What are the drive's core specifications?
Capacity is 300GB. The interface is SAS (Serial Attached SCSI), dual port, with an external data transfer rate of 6 Gb/s. Rotational speed is 10,000 rpm. The form factor is 2.5-inch low profile (SFF), measuring 0.591" in height and 2.75" in width. It is classified as a hot-plug hard drive for server and storage use, so it can be installed or removed while the system is running in a supported bay.
Does it include a tray or caddy?
Yes. The hot-swap tray is included and already attached to the drive, so no separate carrier or mounting kit is needed for a supported SFF hot-plug bay. This matters when you are populating multiple bays to a configuration, since drive-only purchases without a carrier cannot be seated in a ProLiant hot-plug backplane. The assembled height of 0.591" and width of 2.75" match standard SFF bay dimensions.
Which servers is this drive listed for?
Supported ProLiant models include BL20p G4, BL25p G2, BL45p G2, BL460c G1/G5/G6/G7, BL465c G1/G5/G6/G7, BL480c, BL620c G7, BL680c G5/G7, BL685c G1/G5/G6/G7, BL860c, BL870c, DL1000, DL120 G7, DL160 G6, DL160se G6, DL165 G7, DL170e G6, DL170h G6, DL180 G6, DL320 G6, DL360 G4p/G5/G6/G7, DL365 G1/G5, DL370 G6, DL380 G4/G5/G6/G7, DL385 G1/G2/G5/G5p/G6/G7, DL580 G3/G4/G5/G7, DL585 G1/G2/G5/G6/G7, DL785 G5/G6, DL980 G7, ML350 G5/G6, ML370 G4/G5/G6, ML570 G3/G4, SL390s G7 and WS460c G6.
What does dual port SAS provide in a configuration?
Dual port SAS gives the drive two independent SAS ports rather than one. In enclosures and controllers that support it, this allows redundant data paths to the same drive, so a single path or expander failure does not isolate the device. The drive still operates in single-path configurations. Link speed is 6 Gb/s on the SAS interface, and the drive is recognized as a standard SAS storage device.
HPE PARTSURFER INFO FOR 507127-B21
| Spare PN | Description | |
|---|---|---|
 | 507284-001 | 300GB SAS hard disk drive - 6Gb/sec transfer rate, 10,000 RPM, 2.5-inch small form factor (SFF), hot plug (HP), dual-port (DP) - For use with Gen7 or earlier models |
Last Updated: 2026-07-22
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- Digitally Signed Firmware
- No
- Estimated Release
- 2007
- Form Factor
- SFF (2.5 inch)
- Form Factor/Carrier Type
- SFF / Standard Carrier (ST)
- HDD Data Transfer Rate
- 6 Gb/sec (6G)
- HDD Performance Level
- Enterprise (ENT)
- HDD Rotational Speed
- 10,000 rpm (10K)
- HDD Storage Capacity
- 0.300 TB [300 GB]
- Hotplug Carrier Type
- Standard Carrier (ST)
- Interface
- SAS
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This product is warrantied against hardware failure for a period of 3 Years from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
Please be aware that factory-sealed equipment can only be returned if it remains unopened.
Defective Products
If you have received a defective part and your machine is still within the HPE warranty period, please initiate a warranty exchange by visiting the HPE Enterprise Support Center. Be sure to have the serial numbers of the defective drive and your server/storage array handy.
In case your hardware becomes defective during the Global One warranty period, but the HPE warranty has expired, you can return the product to us for a working replacement. You are responsible for the shipment of returned merchandise. However, we will cover the expense of Ground /Economy shipment for the replacement item(s).
Requesting an RMA
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