Seagate BarraCuda Compute
BarraCuda—because you crave capacity that rivals the ocean’s depths and speed that never slows you down.
SATA Hard Drives
Seagate's Multi Tier Caching Technology utilizes DRAM, NANO and a small part of HDD for data caching to optimize data ow to enhance both read and write performance.
The Barracuda HDD is a best for the following applications:
- All-in-one PCs
- Home Servers
- Ultra-thin laptops
- Business PCs/laptops
Solid State Drives (SSD)
Soar to new heights of performance with Seagate BarraCuda SSD providing maximum sequential read and write speeds, reaching 540/520 MB/s. The new Seagate BarraCuda SSD is a cost-effective way to handle all your PC needs—working, playing, storing your movies and music and more.
The Barracuda SSD is a best-t for the following applications:
- Barracuda SSD
- Desktops or all-in-one PCs
- Home servers
- M.2 2280 Form Factor
- Ultra-thin laptops
- Business PCs and laptops
- Workstations and all-in-one PCs
Seagate BarraCuda ST2000DM008 2TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
Pros: Two year warranty 10/6/2017 an update on how this drive has performed. In a word-Flawless. In the age of uber mass production and even cheaper prices per GB ( Listen up sonny, back when gas was affordable, a 47 Gigabyte(!) seagate scsi drive cost me $500 and I was overjoyed to get it ( very short supplies) oh yeah its like 18 years old and while a little bearing noise is present it still works like new. you have to start treating current consumer grade hard drives like the 8-track tapes they are and be ready to clone and replace them every couple of years. come on folks under $30 TB?. I'm sure they'd be plenty reliable at $100 TB, like the so-called enterprise class drives. I'll be the first to chime in that it stinks to get a stinker, especially if you don't install it for a couple of months. I've been using seagate for a long time and never was wronged, which is pretty good in the long term players market. Consider the time you've spent building your digital archive. clone your data to the replacement and retire the original while you have no doubts it can spit your data up if need be. I'm on a two year cycle for the SSD that is my main boot drive, not that I've had any trouble, but I have to be prepared as losing my work PC for a day would be painful. I still rate it.... ------------------------------- Good Value Quiet Passed without fault my torture tests, which includes killing power while writing a big file and an overnight surface test. No Bad sectors out of the box.
Cons: For those who buy on impulse or don't fully read descriptions, there are no cables or fixing screws included with a _bare drive_ However, they can always be found for just a few bucks. Unless you have a specific reason, stay away from locking sata cables. Easy to damage a drive if you "forget" that the cables lock in place.
Overall Review: I'm hoping Seagate has tilted their budgets to better QA on products people trust their important memories to, even when they are foolish enough not to keep a full readable backup on an external drive. I guess we'll see how many people complain about issues on this new series of hard drives. The 3TB range is pretty optimal for a whole bunch of reasons and with prices hovering around $25-30 a TB this drive falls into the sweet spot of brand loyalty. You can populate an array without breaking the budget. Seagate drives appear to have had some quality issues in the past if you read the reviews, but consider all the working drives people don't care to write a review about. While today's manufacturing systems have reduced prices drastically, we're packing data tighter then ever and even a minor fault will result in lost data. (like all the pics from your bachelor party!). Keep good backups. I consider today's drives sort of disposable; if you do also, have a look at the other drives in Seagates line, specifically the Firecuda, with it's five year warranty. Easily worth the extra costs if you can get by with a 2TB unit and do not have the budget to purchase enterprise level hardware. A five year warranty shows confidence. I need confidence. After two years my drives get replaced and I use the old drive as a long term backup and I have a box at the bank holding my drives from the last ten years. One of em wouldn't spin up during the annual review. I eventually broke the stiction (GTS) and was able to mount the drive and copy all the data back to my PC. What's a ten year old 80GB drive worth ? ( $10) The data on it?..well you don't want to know what that is worth now do you? I'm using this drive in a HTPC as the primary recording drive now, data rates are what I expected, your results will most certainly vary but in the 3TB drive segment, the Seagate puts on a good show at a competitive price. I'd rate it as a good buy with it's two year warranty and five eggs I'll update this review in the event of something noteworthy happens, but I expect it to be smooth sailing
Series of hard disk drives produced by Seagate Technology
The Seagate Barracuda is a series of hard disk drives and later solid state drives produced by Seagate Technology that was first introduced in 1993.
The line initially focused on high-capacity, high-performance SCSI hard drives until introducing ATA models in 199 and SATA models in 2002. Since 2001, the Barracuda is Seagate's most popular product line as the hard disk drive industry started to move to a 7200 RPM spindle speed.
In 1993 Seagate introduced the first ever 7200-RPM spindle speed hard drive, the Barracuda 1, sold in capacity of 1.7 GB with a size of 3.5 inches.
On July 24, 1995, Seagate has shipped over one million Barracuda hard drives.
On November 13, 2000, Seagate launched the Barracuda 180 series, it had the world's highest capacity for hard drives at the time, with 181 GB.
On Dec 03, 2001, Seagate introduced the Barracuda 36ES2 series, one of the last Barracuda SCSI series.
On Dec 02, 2002, Seagate began shipping the first ever Serial ATA hard drive, the Barracuda 7200.7 series.
On Mar 24, 2003, Seagate made their Serial ATA hard drive's available for retail consumers.
Barracuda 1 & 2
In 1993, Seagate released the first Barracuda drives, the ST11950N, ST11950ND, ST11950W, and ST11950WD. The series had a capacity of 2.03 GB (1.69 GB formatted), FAST SCSI-2 (N/ND) or WIDE SCSI-2 (W/WD) interface, and were the first hard drives ever to have a spindle speed of 7200-RPM.
Owing to their rotational speed, they were very fast but very expensive at the time. The FAST SCSI-2 interface of the N/ND drives targeted them to servers and high-performance systems. The original Barracuda offering were in a 3.5 inch "half height" format that was popular at the time, giving it a height of 1.63 inches or 41.4 mm.
Seagate boasted a 5 year warranty for the drives, 500,000 hour Mean Time Between Failures, 4.17 msec latency, and a 10 Mbit/s transfer speed on the Fast SCSI-2 bus. Bus speeds of the original Barracuda line would soon go up to 100 Mbit/s by 1995, even as capacity increased substantially in the first 4 iterations of the Barracuda.
The Barracuda 1 series was immediately followed up by the Barracuda 2 series, which were the same for the most part except they offered a slightly higher capacity of 2.57 GB (2.1 GB formatted).
In late 2000, Seagate introduced the Barracuda 180 series with the ST1181677LW and ST1181677LC. They were the highest capacity hard drives in the world at the time. They had 12 platters with about 15 GB per platter, adding up to 181 GB. The 12 platters made the drive more larger than most drives at the time, with 1.6 inches in height. They had Tagged Command Queuing with up to 64 commands and a MTBF rating of 1.2 million hours, or 137 years. They also had a 26-47 Mbps transfer speed with the Ultra160 SCSI interface, and a average access time of 12.1 ms with 4 MB of on-board cache. On release the drives cost $1,850.
Later Seagate replaced the base models with the ST1181677LWV and ST1181677LCV, they had 16 MB of on-board cache versus 4, and were hot-swappable if they had the right cable connection, but were otherwise the same.
The series was discontinued in early 2004.
The last SCSI Barracuda series was announced in December of 2001, with the Barracuda 36ES2 series. The series was a successor to the Barracuda 36ES series. 4 models were available in 2 capacities. The ST318418N and ST318438LW had 19.9 GB while the ST336918N and ST336938LW had 36.9 GB, with 2 MB of on-board cache. Both capacity drives used one platter, with the 19.9 GB ones using one side of the platter. These drives were given an MTBF rating of 800,000 hours
|Model no.||Gen.||Released||Capacity |
|Cache||Speed||Interface||Feature set||Sector Size |
|ST11950N/ND||1||1993||1.69 GB||1 MB||7200 RPM||SCSI-2 FAST||TCQ||512 bytes||1 Series||1/2 Series Manual|
|ST11950W/WD||1||1993||1.69 GB||1 MB (W) |
512 KB (WD)
|7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||1 Series|
|ST12550N/ND||1||1993||2.1 GB||1 MB||7200 RPM||SCSI-2 FAST||TCQ||512 bytes||2 Series|
|ST12550W/WD||1||1993||2.1 GB||1 MB (W) |
512 KB (WD)
|7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||2 Series|
|ST15150N/ND/DC||4||4.19GB||1 MB||7200 RPM||SCSI-2 FAST||TCQ||512 bytes||4 Series||Series Manual|
|ST15150W/WD/WC||4||4.19GB||1 MB||7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||4 Series|
|ST12551N||1994||0.99 GB||7200 RPM||TCQ||512 bytes||2LP Series|
|ST31250N/ND||1994||0.99 GB||512 KB||7200 RPM||SCSI-2 FAST||TCQ||512 bytes||2LP Series|
|ST31250W/WD||1994||0.99 GB||512 KB||7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||2LP Series|
|ST31250WC/DC||1994||0.99 GB||512 KB||7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||2LP Series|
|ST32550N/ND||2.09 GB||512 KB||7200 RPM||SCSI-2 FAST||TCQ||512 bytes||2LP Series|
|ST32550W/WD||2.09 GB||512 KB||7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||2LP Series|
|ST32550WC/DC||2.09 GB||512 KB||7200 RPM||SCSI-2 WIDE||TCQ||512 bytes||2LP Series|
|ST32171N||1996||2.15 GB||512 KB||7200 RPM||SCSI-3 FAST-20||TCQ||512 bytes||4LP Series|
|ST32171W||1996||2.15 GB||512 KB||7200 RPM||SCSI-3 WIDE-20||TCQ||512 bytes||4LP Series|
|ST34371N||1996||4.35 GB||512 KB||7200 RPM||SCSI-3 FAST-20||TCQ||512 bytes||4LP Series|
|ST34371W||1996||4.35 GB||512 KB||7200 RPM||SCSI-3 WIDE-20||TCQ||512 bytes||4LP Series|
|ST19171N||9||1996||9.1 GB||512 KB||7200 RPM||SCSI-3 FAST-20||TCQ||512 bytes||9 Series||Series Manual|
|ST19171W/WD/WC/DC||9||1996||9.1 GB||512 KB |
|7200 RPM||SCSI-3 WIDE-20||TCQ||512 bytes||9 Series|
|ST136475LC/LW||7||2000||36.4 GB||1 MB or 4 MB||7200 RPM||Ultra2 WIDE SCSI||TCQ||512 bytes||36 Series|
|ST150176LC/LW||7||2000||50.1 GB||1 MB or 4 MB||7200 RPM||Ultra2 WIDE SCSI||TCQ||512 bytes||50 Series|
|ST1181677LW/LWV||7||2000||181.6 GB||4 MB (LW) |
16 MB (LWV)
|7200 RPM||Ultra160 SCSI||TCQ||512 bytes||180 Series||Series Manual|
|ST1181677LC/LCV||7||2000||181.6 GB||4 MB (LC) |
16 MB (LCV)
|7200 RPM||Ultra160 SCSI||TCQ||512 bytes||180 Series|
|ST318417N/W||18.4 GB||2 MB||7200 RPM||512 bytes||36ES Series|
|ST318437LW/LC||18.4 GB||2 MB||7200 RPM||512 bytes|
|ST336737LW/LC||36.9 GB||2 MB||7200 RPM||512 bytes|
|ST318418N||8||2001||19.9 GB||2 MB||7200 RPM||Ultra160 SCSI||TCQ||512 bytes||36ES2 Series||Series Manual|
|ST318438LW||8||2001||19.9 GB||2 MB||7200 RPM||Ultra160 SCSI||TCQ||512 bytes|
|ST336918N||8||2001||36.9 GB||2 MB||7200 RPM||Ultra160 SCSI||TCQ||512 bytes|
|ST336938LW||8||2001||36.9 GB||2 MB||7200 RPM||Ultra160 SCSI||TCQ||512 bytes|
|ST318436LW||18.3 GB||2 MB||7200 RPM||TCQ||512 bytes||18XL Series||Series Manual|
|ST318436LC||18.3 GB||2 MB||7200 RPM||TCQ||512 bytes|
|ST318436LWV||18.3 GB||4 MB||7200 RPM||TCQ||512 bytes|
|ST318436LCV||18.3 GB||4 MB||7200 RPM||TCQ||512 bytes|
|ST318426LW||18.3 GB||1 MB||7200 RPM||TCQ||512 bytes|
|ST318426LC||18.3 GB||1 MB||7200 RPM||TCQ||512 bytes|
|ST318416N||18.3 GB||2 MB||7200 RPM||TCQ||512 bytes|
|ST39236LC||9.1 GB||2 MB||7200 RPM||TCQ||512 bytes|
|ST39236LWV||9.1 GB||4 MB||7200 RPM||TCQ||512 bytes|
|ST39236LCV||9.1 GB||4 MB||7200 RPM||TCQ||512 bytes|
|ST39226LW||9.1 GB||1 MB||7200 RPM||TCQ||512 bytes|
|ST39226LC||9.1 GB||1 MB||7200 RPM||TCQ||512 bytes|
|ST39216N||9.1 GB||2 MB||7200 RPM||TCQ||512 bytes|
|ST39216W||9.1 GB||2 MB||7200 RPM||TCQ||512 bytes|
ATA and SATA models
Barracuda ATA (1999)
Available in capacities between 6.8 GB and 28.2 GB, with a 512 KB cache buffer and an ATA/66 interface. This is the first model in the Barracuda family equipped with an ATA/IDE interface.
Barracuda ATA replaced Medalist Pro 6530/9140 drives, which were the world's first 7200 RPM ATA/IDE drives available on the market when launched in October 1997.
Barracuda ATA II (2000)
Available in capacities between 10 GB and 30 GB, with a 2 MB cache. Supports up to ATA/66 interface. Seagate announced launch of Barracuda ATA II on January 31, 2000.
Barracuda ATA III (2000)
Available in capacities between 10 GB and 40 GB, with a 2 MB cache. Supports up to ATA/100 interface. Seagate announced launch of Barracuda ATA III on September 6, 2000.
Barracuda ATA IV (2001)
Available in capacities between 20 GB and 80 GB, with a 2 MB cache. Supports up to the ATA/100 interface. These drives operate very quietly as they are one of the first hard drives to use fluid dynamic bearings in their spindle motors. Furthermore, their seek times were slowed in firmware to reduce noise output.
These disks cannot operate reliably at ATA/100 on RCC/ServerWorks IDE controllers, as their drivers blacklist the disks, thus limiting their operation to ATA/66.
Barracuda ATA IV was the first generation of Barracuda ATA drives to be available exclusively with fluid dynamic bearings in spindle motors. Seagate announced their launch on June 27, 2001.
Barracuda ATA V/ATA V Plus/Serial ATA V (2002)
Available in capacities between 30 GB (60 GB for SATA models) to 120 GB, with 2 MB cache (8 MB in SATA models), with either ATA/100 and SATA/150 interfaces. Barracuda V with SATA port is one of the first hard drives to feature a SATA interface.
The SATA models have many problems, including random data loss (such as disappearing partitions). These disks cannot work with some Silicon Image SATA controllers, as their drivers blacklist the disks and limit the maximum sectors of each transaction below 8 KB (15 sectors), leading to considerably reduced performance.
Seagate announced launch of Barracuda ATA V on June 24, 2002.
Barracuda 7200.7/7200.7 Plus (2002-2003)
Available in capacities between 40 GB and 200 GB, with ATA/100 and SATA interface options. The drives have 2 MB (marketed as Barracuda 7200.7) or 8 MB (marketed as Barracuda 7200.7 Plus) of cache, depending on the model. Seagate announced launch of Barracuda 7200.7 family on December 2, 2002 with 80 GB platters and capacities up to 160 GB. Raised capacities up to 200 GB using 100 GB platters became available in September 2003. SATA models were first launched without NCQ feature, NCQ models were added to offer in 2004 (models ST380817AS, ST3120827AS and ST3160827AS, capacities between 80 and 160 GB; non-NCQ models are ST380013AS, ST3120026AS and ST3160023AS).
A budget version of Barracuda 7200.7, marketed as U Series 9, with 1 MB of cache and different actuator mechanism, became available exclusively to OEMs in early 2003. They were available exclusively with ATA/100 interface. Produced capacities were 80, 120 and 160 GB.
Barracuda 7200.8 (2004)
Available in capacities between 200 GB and 400 GB, with either an ATA/100 or SATA interface with NCQ, these were sold alongside the 7200.7 series, providing higher capacities than the 7200.7. The drives have 8 MB or 16 MB of cache, depending on the model. It was the first generation of Barracuda drives to offer 16 MB of cache. Starting from Barracuda 7200.8 all SATA models are shipped with NCQ feature. Seagate announced launch of Barracuda 7200.8 on June 14, 2004.
Barracuda 7200.9 (2005)
Available in capacities between 40 GB and 500 GB, with either ATA/100 or SATA 3 Gbit/s interfaces and 2 MB, 8 MB or 16 MB of cache, depending on the model. All SATA models were available with new 3 Gbit/s interface (1,5 Gbit/s mode is available via jumper). Seagate announced launch of Barracuda 7200.9 on June 8, 2005.
Certain models of Barracuda 7200.9 drives were also available under Maxtor brand, the model name under this brand was DiamondMax 20. It was the oldest generation of Barracuda drives to be also offered under Maxtor brand after its acquisition by Seagate have been completed in 2006; model numbers of Maxtor-branded variants are identical as of Seagate ones but begin with STM letters.
Barracuda 7200.10 (2006)
Available in capacities between 80 GB to 750 GB and either an ATA/100 or SATA 3 Gbit/s interface. 2, 8 or 16 MB of cache, depending on the model. This was the first Seagate hard drive to use perpendicular magnetic recording (PMR) technology (only in 250 GB SATA models: ST3250410AS with 16 MB of cache and ST3250310AS with 8 MB of cache). Seagate announced launch of Barracuda 7200.10 on April 26, 2006. 250 GB PMR models were launched on June 7, 2007.
This is the last generation of Barracuda to feature IDE interface on certain models. This is the only generation of Barracuda to feature 750 GB as the greatest in storage limit of IDE drive ever made by any manufacturer. Industry's competitors ended development of IDE hard drives on lower capacities: Hitachi (despite having plans to offer 750 GB and 1 TB IDE drives which were eventually never produced and released), Maxtor (before its acquisition by Seagate) and Western Digital ended on 500 GB and Samsung ended on 400 GB.
Barracuda 7200.10 drives were also available under Maxtor brand, the model name under this brand was DiamondMax 21.
The SATA models of this family with firmware 3.AAK [codename GALAXY] or older (e.g. 3.AAE[dubious – discuss][codename TONKA]) have introduced a firmware (microcode) bug:
- There is a performance anomaly using hdparm with an NCQ queue depth of 31 in AHCI mode. Speed test measures only 55–64 MB/s (expected: >70–75 MB/s).
Seagate does not officially provide firmware updates for this issue; however, an unofficial firmware update[dubious – discuss] (3.AAM) exists for the following drive models:
- ST3320820AS with part number 9BJ13G-308,
- ST3320620AS with part number 9BJ14G-308 (with firmware 3.AAK),
- ST3500830AS with part number 9BJ136-308 and
- ST3500630AS with part number 9BJ146-308.
Barracuda ES (2006)
Available in capacities between 250 GB to 750 GB, with SATA 3 Gbit/s interface and 8 or 16 MB of cache depending on model. The ES (Enterprise Storage) family were high-reliability drives based on Barracuda 7200.10 design. Intended for business-critical use, with all drives having a 5-year warranty. Barracuda ES series replaced previous NL35 series (based on 7200.8) and NL35.2 series (based on 7200.9) enterprise drives. Seagate announced launch of Barracuda ES on June 7, 2006.
Barracuda 7200.11 (2007)
With a SATA 3 Gbit/s interface, capacities range from 160 GB to 1.5 TB. Codenames are Moose (earlier revision, using 250 GB platters) and Brinks (later revision, using 333 and 375 GB platters). Their cache size can be 8 MB, 16 MB or 32 MB, depending on the drive model. Seagate announced launch of Barracuda 7200.11, along with Barracuda ES.2, on June 25, 2007. They were also available under Maxtor brand, the model name under this brand was DiamondMax 22.
Alongside normally retailed models, a 2TB version (model number ST32000540AS) was produced in 2009, being marked on the label as Barracuda 7200.11; actually it's a pre-production series of Barracuda XT drives, installed in certain models of FreeAgent, Expansion and BlackArmor external drives. It uses the same mechanical design as in Barracuda XT and is unrelated to all other Barracuda 7200.11 models. Notable are also missing various international safety marks.
This family has introduced many severe firmware (microcode) bugs:
- Disks may not show and utilize all the cache.
- FLUSH_CACHE commands may time out when NCQ is used.
- There is a performance anomaly using hdparm with NCQ queue depth 31 in AHCI mode. Speed test measures only 45–50 MB/s (expected: > 100–110 MB/s).
- Disks may be inaccessible at power on.
Disks affected by the last bug will not be detected by the computer BIOS after a reboot. Numerous users have complained about this and are discussing it in a public forum when discussions in Seagate's forums were subjected to heavy moderation and subsequently closed. The symptom of the problem is that the computer BIOS will no longer detect the hard disk after a reboot, and upon connecting to the hard disk with a serial TTL board, this error code will be seen as "LED:000000CC FAddr:0024A051." Faulty firmware triggers this "failure."
Seagate FreeAgent external drives have also utilized 7200.11 hard disks with the SDxx firmware, and failures of these hard drives were also reported. The access LED remains permanently on, despite being disconnected from USB and no longer being recognized by the computer. However, Seagate says that the LED light remaining permanently on had nothing to do with firmware problems. The drives have also become known for their unusually high failure rates, including sudden mechanical failures; the rapid development of large numbers of bad sectors; the motherboard detecting the drive as a different model and the drive regularly "freezing" when being read from or written to.
Other companies have claimed to be able to resolve this problem using their own solution, namely Ace Laboratory PC3000-UDMA (version 4.13).
In order to fix the first bug, Seagate released firmware update AD14 for the affected disk models; to fix the second, third and fourth bugs, Seagate released firmware updates SD1A, SD1B, SD2B and SD81. The SD2B firmware update for Brinks removes the DCO ATA feature from the disks, while SD1A for Moose adds two ATA features.
Barracuda ES.2 (2007)
Available in capacities between 250 GB (500 GB for SAS models) and 1 TB, 16 MB cache for SAS models and a 32 MB cache for SATA 3 Gbit/s models. Enterprise-grade drives based on 7200.11 series. SAS models were the first Barracuda drives with server-grade interface since the discontinuation of Barracuda 180 in 2004.
Similar to the 7200.11 family, this family has introduced many firmware (microcode) bugs, which was fixed by SN06 firmware released by Seagate:
- RAID arrays using these disks may fail.
- Secure Erase command is not handled properly.
- There is a performance anomaly using hdparm with NCQ queue depth 31 in AHCI mode. Speed test measures only 50 MB/s (expected: >100 MB/s).
- Disks may be inaccessible at power on.[dubious – discuss]
Barracuda ES.2 is currently the last product in Seagate's enterprise line to bear the "Barracuda" name. The successor of ES.2, launched in early 2013, is branded as "Constellation ES.3" which is based on the design of 14th-generation Barracuda.
Barracuda 7200.12 (2009)
Available in capacities between 160 GB to 1 TB. Initial models (CCxx firmware) supported up to SATA 3 Gbit/s, while later revisions (firmware JCxx) support the newer SATA 6 Gbit/s interface. Their cache size can be 8 MB, 16 MB or 32 MB, depending on the drive model. Uses 500 GB platters. Power consumption is reduced from previous models, resulting in lower heat dissipation and claimed reliability improvements. Seagate announced launch of Barracuda 7200.12 on January 5, 2009. SATA 6 Gbit/s models replaced SATA 3 Gbit/s models in January 2011.
Barracuda 7200.12 drives were also available under Maxtor brand, the model name under this brand was DiamondMax 23. Only SATA 3 Gbit/s models were available under Maxtor brand and was the last generation of DiamondMax drives produced. Seagate phased out Maxtor brand in October 2009, reviving it in 2016, except for internal HDDs.
Barracuda XT, LP and Green (13th generation) (2009/10)
Available in capacities between 2 TB and 3 TB (XT) with 64 MB cache, 1 TB and 2 TB (LP) with 16 MB or 32 MB cache, 1 TB, 1.5 TB and 2 TB (Green) with 16 MB to 64 MB cache depending on model. This is the first Barracuda series to support SATA 6 Gbit/s and its buffer size is 64 MB. Rotation speed is 7,200 RPM for XT, and 5,900 RPM for LP and Green.
Barracuda XT was launched on September 21, 2009.
Barracuda XT is intended for high-performance gaming computers and workstations with sustained data transfer rate of 149 MB/s. LP is designated for mass storage applications favoring low heat output, quiet operation and better-than-average energy efficiency.
The Barracuda Green series was introduced in December 2010 as a high-performance, eco-friendly, low-power internal drive, replacing the Barracuda LP series. It is the first to use Advanced Format sectors and operates at 5900 RPM.
Barracuda XT used re-engineered mechanical design, which featured, for the first time in desktop hard drives from Seagate, a head unload ramp. The same design was later re-used in Seagate's enterprise hard drives. Original Barracuda LP models used the same mechanical design as used in Barracuda 7200.11 drives, later ones (and Green models), like XT, also used re-engineered mechanical design, but was different. It was later re-used in 14th generation of Barracuda drives.
The Barracuda LP series also present firmware issues that might be alleviated by the latest firmware available on the Seagate web site (CC35), although there are reports that drives with the CC35 firmware loaded continue to exhibit the same problems as earlier firmware releases. The most commonly referred issue with the Barracuda LP series drives appears to be one variation or another of the infamous click of death problem; the drive will start to emit a regular clicking noise at some point in its early life (possibly even at first start) and after some time will fail altogether, often after a few months of use. While the clicking noise is emitted, the hard drive is inaccessible and may prevent the BIOS from detecting it.
There is also a CC95 firmware (at least some of those drives came as part of external Seagate FreeAgent drives), but it is not clear whether this build fixes all known issues, and why firmware versions between CC35 and CC95 do not seem to exist.
Barracuda (14th generation) (2012)
Further information: ST3000DM001
Available in capacities between 250 GB to 3 TB, 7200 RPM, 16 MB to 64 MB cache, depending on the model. First Seagate hard drives with 1 TB per platter technology. From this generation onwards, Seagate phased out previous "green" models, citing the inherent power saving functions featured on the 14th generation removed the need for a separate low-power design. One model in particular, ST3000DM001, is notable for its high failure rate,  frequently experiencing bad sector growth and head crashes.
BarraCuda (16th generation) (2016)
The successor of the 14th generation Barracuda, branded as "Desktop HDD", was a 5,900 RPM series launched in early 2013 and was not considered part of the Barracuda line.
"Barracuda" name made a comeback in 2016, stylized by Seagate as BarraCuda. Available in capacities between 500 GB to 8 TB. Buffer sizes vary from 32 MB for 500 GB and 1 TB models to 256 MB for 3 TB to 8 TB units. Currently listed BarraCuda drives mostly use shingled magnetic recording (SMR) technology to write data onto platters, and spin up at 5400 RPM (exception is model ST2000DM008, which spins up at 7200 RPM while utilizing SMR technology). 500 GB and 1 TB models still use perpendicular magnetic recording technology, but they also do not feature load/unload ramps, instead using contact start/stop technology.
BarraCuda Pro (2016)
Available in capacities between 2 TB and 14 TB. Launched alongside BarraCuda, it is described as "Perfect for high performance desktop, creative pro desktop applications, and gaming". This series has higher read/write performance than standard BarraCuda drives; one PCWorld review noted its consistent read speed throughout its entire capacity, which is unusual for a conventional HDD.
While 2 and 4 TB models feature 128 MB of cache, all other capacities feature 256 MB of cache. Capacities from 8 TB are helium-sealed drives, while lower ones (including 8 TB model ST8000DM005) are air-sealed. All models spin up at 7200 RPM, have 512 bytes per sector and write data onto platter using perpendicular magnetic recording technology.
Warranty period is either 1 year, 2 years, 3 years or 5 years from the documented date of purchase, depending on the type of product and where it was purchased.
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- ^1 KB = 1024 B
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