items: 0
Seagate Barracuda ES    
Advanced Replacements
Online Warranty Checker
Online RMA Request
Presales Support

We offer no-charge pre-sales support for locating the correct replacement disk drive for your SAN/Workstation/Server.

Call Us:
888-878-4167 x1

E-Mail Us:

Seagate Barracuda ES

The Seagate Barracuda is an "enterprise" class SATA disk drive designed for archival storage in servers and SANs.

Seagate ST3750640NS Label Seagate ST3750640NS Printed Circuit Board
Seagate ST3750640NS SATA Connector

Model Overview
The Seagate Barracuda ES family shipped with several variations. Standard units shipped with 8MB of cache, while others shipped with 16MB of cache. Towards the end of the production run, the Barracuda ES+ family was introduced, featuring IOEDEC (IO Error Detection and Correction).

Model Name Model Number (16MB Cache) Model Number (8MB Cache) Code Name
Barracuda ES ST3250620NS ST3250820NS Galaxy
Barracuda ES ST3500630NS ST3500830NS Galaxy
Barracuda ES ST3750640NS ST3750840NS Galaxy
Barracuda ES+ ST3250621NS ST3250821NS Galaxy
Barracuda ES+ ST3500631NS ST3500831NS Galaxy
Barracuda ES+ ST3750641NS ST3750641NS Galaxy

Avoid New Bulk and New Pulls
The Seagate Barracuda ES was released in 2006 and production ran until the end of 2008. The series was replaced by the Seagate Barracuda ES,2. Beware of merchants selling ST3750640NS, ST3500630NS,, or ST3250620NS drives as "new bulk" or "new pulls." When buying any SATA drive that is not factory sealed, be sure to ask the vendor about the drive SMART statistics. Observe all the failure points monitored by SMART in the image below. The drive we tested was advertised as "new bulk" when, clearly, it has been used extensively.

  • New drives should have 0 reallocated sectors ("Grown Defects.")
  • New drives should have under 10 Power On Hours (though not necessarily 0.)
  • Any uncorrectable error is a sign of a failing drive. On Seagate disk drives, it is normal to see high seek error rates as the "raw value" is not an actual counter of errors. On any drive, ECC corrected errors are perfectly normal.

What to expect from an iStorage Networks Disk Drive
iStorage Networks verifies that every drive we ship is either new (as identified by the number of power on hours being less than 5) or being a qualified refurbished unit. All our drives will ship with the latest firmware revision and will never have any reallocated sectors (aka grown defects) or sectors pending reallocation. Grown defects are the number one indicator of a failing disk drive (see a great Google case study here.)

iStorage Networks will never ship a disk drive with any SMART parameter out of Seagate specification.

ST3750640NS SMART Pass
  • Most of our drives have under 1000 power on hours.

  • A good drive (whether new or refurbished) should have 0 sectors pending reallocation.
  • ECC errors are normal. Unrecoverable errors should be 0.