HPE 785103-B21 600GB 12G SAS 15K 3.5 HDD

HPE 785103-B21 600GB 12G SAS 15K Enterprise Hard Drive

The HPE 785103-B21 is a 600GB Enterprise hard drive that spins at 15,000 rpm and uses a 12Gb/s SAS interface. It was released as an HPE option kit for older HPE ProLiant servers, and HPE’s own spare part record describes it for use with G7 and earlier models.

This drive suits IT teams that still run older ProLiant hardware and need a like-for-like replacement for a failed disk. It is also useful to repairers who keep a small stock of matched drives for customer servers that are past their original support period.

The 785103-B21 is listed at Euroland IT Store as New and as Refurbished, with supply depending on current stock.

HPE 785103-B21 Technical Specifications

What Is The HPE 785103-B21?

HPE gives each drive several identifiers. The number ending in -B21 is the option kit, which is what a buyer would have ordered through an HPE reseller. The same drive carries a spare part number, 785409-001, which is printed on the carrier label and used by HPE support for replacements. Inside the carrier sits a bare disk with its own model code, EH0600JDYTL.

The exact number matters because HPE often fits the same bare disk into different carriers for different server generations. Two drives with the same capacity and speed can still fail to fit, or fail to show the correct status, if the carrier is wrong. Matching 785103-B21 or 785409-001 to the label on your existing drive is the safest way to get the correct version.

Why A 15K Drive Still Makes Sense

A 15,000 rpm drive turns the platters faster than a 10K or 7.2K disk. That cuts the time the drive waits for data to come round under the head, so random reads and writes respond sooner. This is why 15K drives were the standard choice for database logs, busy file shares and transaction systems on older ProLiant servers.

The 12Gb/s SAS interface on this model gives plenty of headroom for a single spinning disk. On older controllers it will simply run at the speed the controller supports, so you can drop it into an existing array without changing the rest of the system.

New HPE 785103-B21

A new unit is a good fit when you want a drive with no previous running hours, for example when replacing a disk in a critical RAID set. Please check the product page for the condition and warranty that apply to the stock currently on offer.

Refurbished HPE 785103-B21

A refurbished drive keeps costs down on servers that are near the end of their planned life. It is a sensible option for test labs, spare pools and secondary systems. The condition grade and warranty for refurbished stock are shown on the product page, so please read them before you order.

Compatibility

HPE’s spare part description for this drive says it is for use with G7 or earlier models. In practice that means:

• HPE ProLiant G7 servers with SAS hot-plug drive bays
• Earlier HPE ProLiant generations (G6 and before) that use the same style of hot-plug drive tray

Gen8, Gen9 and Gen10 ProLiant servers use the SmartCarrier design instead, so this drive is not the usual choice for them. Before ordering, check the label on your current drive, your server model and your Smart Array controller. Also confirm the drive size and carrier style against your drive bay.

Related HPE Part Numbers

• HPE 785409-001 is the spare part number for this drive.
• HPE 748385-003 is listed as one of the assembly numbers for the bare disk.
• HPE 759212-B21 is a 600GB 12G SAS 15K 2.5in drive listed in our catalogue for later servers.
• HPE 765424-B21 is a 600GB 12G SAS 15K 3.5in drive.
• Need an empty tray? See this HPE 378343-002 2.5in SAS/SATA caddy.
• Browse more options in our server hard drive range.

How To Check This Is The Right Replacement

1. Pull the failed drive and read the spare number on the carrier label. Look for 785409-001.
2. If the label shows an option number, look for 785103-B21.
3. Confirm the server is a G7 or older HPE ProLiant model.
4. Check that the new drive’s capacity is equal to or larger than the other disks in the array.
5. Compare the carrier style with the empty bay before you fit it.

Replacing A Failed Disk In An Older ProLiant

When one disk in a RAID 1, 5 or 10 set fails, the array keeps running in a degraded state. Replacing that single drive quickly is far cheaper than replacing the server, and it lowers the risk of a second failure taking the data with it. Fit the new drive while the server is running, then let the Smart Array controller rebuild the array. Avoid heavy jobs until the rebuild has finished.

Buying HPE 785103-B21 in the UK

Euroland IT Store supplies businesses, IT teams, resellers and repair shops across the UK. Check the product page for condition, warranty, stock and delivery details. Shipping to UK mainland addresses is free once your order passes £100 + VAT. If you are unsure, send us your server model and the numbers printed on your existing drive, or call our sales team on 0203 209 6002.

785103-B21 FAQs

What ProLiant generation does the 785103-B21 fit?

HPE’s spare part record describes this drive for use with HPE ProLiant G7 and earlier models, so check your server generation and the label on your current drive before ordering.

Should I buy the 785103-B21 New or Refurbished?

Choose New for critical arrays where you want a drive with no running hours, and Refurbished when you want to keep costs down on older or secondary servers.

What warranty comes with this drive?

The warranty depends on the condition and stock you buy, and the terms are shown on the product page.

Can this 600GB 15K drive be sent anywhere in Britain?

Yes, we deliver across the UK, and orders over £100 + VAT ship free to UK mainland addresses.

Is 785103-B21 the same as 785409-001?

They are two numbers for the same drive: 785103-B21 is the option kit number and 785409-001 is the HPE spare part number shown on the carrier label.