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Item#: 9SIA24G1ZP5204

Seagate Barracuda ES.2 ST31000340NS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive

  • 7200 RPM 32MB Cache
  • SATA 3.0Gb/s
  • 5 years limited
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The Seagate Barracuda ES.2 drive is the perfect solution for high-capacity enterprise storage applications such as the migration of mission-critical transactional data, from tier 1 to tier 2 (nearline) storage, where dollars/GB and GB/watt are a primary concern. With energy-saving PowerTrim features, superior rotational vibration tolerance and a high throughput SATA 3Gbps interfaces, the Barracuda ES.2 drive provides world-leading technology and value.

  • newegg Enterprise Storage Hard Drive The Seagate Barracuda ES.2 enterprise hard drives deliver industry leading reliability, large capacity, and high data transfer rate for 24 x 7, multi-drive, business-critical applications.
  • newegg Perpendicular Recording Technology Perpendicular recording technology enables industry-leading capacity in existing standard form factors and improves performance by increasing data density while reducing moving parts for enhanced reliability.
  • newegg PowerTrim Technology The PowerTrim technology enables dynamic energy saving for higher power efficiency and lower heat generation.

Learn more about the Seagate ST31000340NS

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years

Customer Reviews of the Seagate ST31000340NS

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  • Francis G.
  • 3/27/2015 8:14:44 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggs3 Months - Fail

Pros: Nice Price for the size

Cons: You get what you pay for.:(

Other Thoughts: Installed Christmas of 2014 failed February 2015. Enough said.

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  • Charles F.
  • 3/18/2015 6:38:54 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggs

Pros: Disks shipped very quickly. They had no bad blocks, or command issues

Cons: One issue I did find, was the Serial Number did not match what was on the label. Seen this before with Seagate Disks, as factory put the wrong label on the Disk. No big deal really if you use Seagate software, it will pull the Serial number from the firmware.

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  • Federico A.
  • 2/12/2015 6:57:06 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsFailed after three months

Pros: I hate to write this review since I have purchased a lot of products thru (for personal and business use) but this is my only recourse since the email us option is not available.

Cons: Purchased the hard drive last Nov 10, 2014 and started to fail last month. Computer will not boot or would just freeze. Ran diagnostic software and noted the hard drive is damaged and irreparable.

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  • Jeremy E.
  • 10/19/2013 8:37:28 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsNot worth it.

Pros: Well Seagate used to be really good.

Cons: The first one of these took data with it when it died. I sent it in for data recovery, and the heads scraped a part of the plater that removed all chance of any recovery.

Seagate didn't want to honor any warrantee. First it was that a qualified operation had the nerve to open the drive. Then since new egg sold me the drive it "had no warrantee." Then did replace the defective drive, and sent me a "cert repaired" replacement.

Today it failed. What is the problem? The clicking sound that the first one had.

Other Thoughts: I might be forced to go back to IBM drives like I used with SCSI. They are noisy, and expensive. (HGST I think they are called now) My old SCSI drives from IBM are still functional. More than I can say for two of Seagate's drives.

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  • Steven K.
  • 1/4/2012 7:35:26 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsFast, Stable, Usually Reliable

Pros: These drives are fast, stable and are usually reliable. I bought two for a RAID-1 from two different lots to ensure they wouldn't die at the same time. They have run very well for 3 years and even survived a SATA controller failure. Excellent RMA service after one of them died. Excellent diagnostic tools.

Cons: So far, one of the two has not lived up to the 5-year warranty. After SMART failure, the bad drive took several attempts to boot up in a functional state, and SeaTools reported 70C temperature on a cold boot.

Other Thoughts: If you can afford it, always go with a RAID if your data is important. Buy one drive from two different places, or order them a month apart, to ensure you get two drives that were made on different dates, or different lots at least. This greatly reduces the chance that the drives will die at the same time.

One of mine started acting up after 3 1/2 years and the RAID kicked it out. I requested an advanced RMA, swapped in the refurb drive they sent me, formatted the bad drive and mailed it back with the included shipping label. Things are working well once again.

2 out of 2 people found this review helpful. Did you? Yes No

  • Anonymous
  • 8/15/2011 4:46:43 PM
  • Tech Level: Low
  • Ownership: more than 1 year

1 out of 5 eggsPoor reliability

Pros: At the time they were quick, large, cheap, enterprise drives

Cons: poor reliability

Other Thoughts: The MTBF is 1.2M hours according to manufacturer but out of the 25 drives we have, 8 have been RMA'd shy of the 3 year mark with 24/7 use. Average mean time we are experiencing in an enterprise environment is 22,220 hours.

2 of the replacement drives through RMA process were DOA!

Hopefully quality issues have been resolved... very poor drives. On the plus-side, the SMART errors grew consistently days up to ultimate failure so we were prepared to replace them with spares.

1 out of 2 people found this review helpful. Did you? Yes No

  • Brian H.
  • 3/31/2011 3:36:47 AM
  • Tech Level: High
  • Ownership: more than 1 year

1 out of 5 eggsUnreliable

Pros: High capacity, fast.

Cons: We bought 36 of these drives 2 years ago and as of yesterday the number of failures is 7. Luckily I use these drives in a RAID configuration with regular backups and have not lost any data. I do not trust these drives enough to let a server run on a single hard drive so I shut it down until a replacement arrives.

Other Thoughts: Seagate is phasing out the Barracuda ES.2 drives and are being replaced by the Seagate Constellation es. Maybe these drives are better?

1 out of 1 people found this review helpful. Did you? Yes No

  • JR T.
  • 2/24/2011 8:20:28 AM
  • Tech Level: High
  • Ownership: more than 1 year

1 out of 5 eggsVery High Failure Rate!

Pros: Low cost.

Cons: We have deployed nearly a hundred of these at various clients for use in RAID arrays. The failure rate has been atrocious. At one client, so far 6 of 32 drives have failed over 1 year of use. Our other clients have similar failure rates, approximately 20%. This is unacceptable, and Seagate support has been of no help. They will only replace the drives as they fail and the client is responsible for shipping charges to Seagate.

In addition to failing drives, even working drives will randomly stop responding, causing cascading issues with the RAID arrays.

Other Thoughts: Never buying or recommending Seagate drives again. Before anyone suggests these: the power is backed by 1+ runtime hours of UPS, and in climate controlled server rooms, these were all shipped with the latest firmware from Seagate, SN06, and were purchased several months apart, making a bad batch seem unlikely. They are listed as compatible for the RAID equipment we are using.

1 out of 1 people found this review helpful. Did you? Yes No

  • Elijah K.
  • 1/13/2011 9:39:16 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

5 out of 5 eggsNice Drive

Pros: Is 7200 RPM which is average and its pretty fast. 32 MB of cache is really good for a drive. Supports SATA II which is good for the price. Performs very well and has never failed. I love Seagate drives. They have great five year warranties and last a long time.

Cons: It doesn't have 64 MB of cache and is only 7200 RPM but because it is only a "good" drive and not an "amazing" drive you can't expect that. Doesn't come with enough screws for my case.

Other Thoughts: I have had this drive for a year and I have never had a problem. Now I have an SSD which is my boot drive but I still use this drive as my storage drive because the SSD is only 60 GB. The drive doesn't bottleneck my system at all and is good because my mobo doesn't do SATA III. I still back up all my data on a Seagate FreeAgent Desktop 500GB because I have had problems with drives before but I don't anticipate having any with this one for a while.
My Specs:
CPU: AMD Athlon II X4 620
Mobo: Asus M4A78T-E
Case: Xion Gaming Series ArmorX
Graphics: Diamond ATI Radeon HD 5750
RAM: OCZ Gold DDR3 4GB 1070MHZ
PSU: Antec Earthwatts 650
Optical Drive: Super Writemaster
HDD (Storage): This Drive
SSD (Boot Drive): OCZ Vertex 2 60GB

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  • Todd B.
  • 11/16/2010 12:51:18 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsSeagate, The G.M. of the Hdd industry

Pros: 5 year warranty, quiet. Supposed to be a "Enterprise" class product, 24x7 data center.

Cons: Purchased 3 in May 2010, Mid Nov 2010 all three fail Seatools test.
Rma to Seagate asap.
Seagate appears to be the new General Motors of the disk drive industry, meaning manufacturing and quality control problems. Seagate used to be the "Cadillac" of the industry, the one product to buy for trouble free service, I guess those days are gone, nothing but trouble with this product.

Other Thoughts: Would I buy again, probably not

2 out of 2 people found this review helpful. Did you? Yes No

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Item#: 9SIA24G1ZP5204
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