Why Won't My Computer Read My Seagate Barracuda 7200.7 Hard Drive

Series of hard deejay drives produced by Seagate Technology

A pair of Seagate Barracuda difficult drives (106 GB & g GB)

The Seagate Barracuda is a series of hard disk drives and later solid state drives produced past Seagate Technology that was first introduced in 1993.^[one]

The line initially focused on high-chapters, loftier-functioning SCSI hard drives until introducing ATA models in 1999 and SATA models in 2002. Since 2001, the Barracuda is Seagate'due south most pop production line every bit the hard disk drive bulldoze industry started to motion to a 7200 RPM spindle speed.

History [edit]

In 1993 Seagate introduced the first ever 7200-RPM spindle speed hard drive, the Barracuda one, sold in capacity of 1.vii GB with a size of 3.5 inches.^[1]

On July 24, 1995, Seagate has shipped over one million Barracuda hard drives.^[1]

On Nov xiii, 2000, Seagate launched the Barracuda 180 serial,^[2] it had the world's highest capacity for difficult drives at the fourth dimension, with 181 GB.

On Dec 03, 2001, Seagate introduced the Barracuda 36ES2 series, one of the final Barracuda SCSI series.^[3]

On Dec 02, 2002, Seagate began shipping the first ever Series ATA difficult bulldoze, the Barracuda 7200.7 series.^[4]

On Mar 24, 2003, Seagate made their Serial ATA hard drive's bachelor for retail consumers.^[5]

SCSI Models [edit]

Barracuda 1 & 2 [edit]

In 1993, Seagate released the starting time Barracuda drives, the ST11950N, ST11950ND, ST11950W, and ST11950WD. The series had a chapters of 2.03 GB (1.69 GB formatted), FAST SCSI-2 (N/ND) or WIDE SCSI-ii (W/WD) interface, and were the outset hard drives e'er to have a spindle speed of 7200-RPM.

Owing to their rotational speed, they were very fast simply very expensive at the time. The FAST SCSI-two interface of the Due north/ND drives targeted them to servers and loftier-functioning systems. The original Barracuda offering were in a 3.5 inch "half height" format that was popular at the fourth dimension, giving information technology a superlative of 1.63 inches or 41.four mm.

Seagate boasted a v year warranty for the drives, 500,000 60 minutes Mean Fourth dimension Between Failures, 4.17 msec latency, and a 10 Mbit/s transfer speed on the Fast SCSI-2 bus.^{[half dozen]} Passenger vehicle speeds of the original Barracuda line would before long go up to 100 Mbit/s by 1995, even equally capacity increased substantially in the commencement 4 iterations of the Barracuda.^[6]

The Barracuda 1 serial was immediately followed up past the Barracuda 2 series, which were the same for the about role except they offered a slightly college capacity of 2.57 GB (2.1 GB formatted).

Barracuda 180 [edit]

In late 2000, Seagate introduced the Barracuda 180 series with the ST1181677LW and ST1181677LC. They were the highest chapters hard drives in the world at the time. They had 12 platters with well-nigh 15 GB per platter, calculation upwards to 181 GB. The 12 platters fabricated the drive more than larger than most drives at the fourth dimension, with one.6 inches in elevation. They had Tagged Command Queuing with upwardly to 64 commands and a MTBF rating of 1.ii 1000000 hours, or 137 years. They also had a 26-47 Mbps transfer speed with the Ultra160 SCSI interface, and an average access time of 12.1 ms with 4 MB of on-board cache. On release the drives cost $one,850.^[vii]

Later Seagate replaced the base models with the ST1181677LWV and ST1181677LCV, they had 16 MB of on-lath cache versus four, and were hot-swappable if they had the right cable connection, but were otherwise the same.

The series was discontinued in early 2004.

Barracuda 36ES [edit]

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 bachelor in 2 capacities. The ST318418N and ST318438LW had xviii.four GB while the ST336918N and ST336938LW had 36.9 GB, with 2 MB of on-board cache. Both capacity drives used i platter, with the 19.9 GB ones using one side of the platter. These drives were given an MTBF rating of 800,000 hours, 4.17 msec latency, and a transfer charge per unit of 298 to 500 Mbit/s for 36.ix GB models and 434 to 500 Mbit/s for eighteen.4 GB models.

Model no.	Gen.	Released	Capacity (Formatted)	Cache	Speed	Interface	Feature set	Sector Size (Default)	Notes	Information
ST11950N/ND	one	1993	1.69 GB	one MB	7200 RPM	SCSI-2 FAST	TCQ	512 bytes	one Series	1/2 Series Manual
ST11950W/WD	i	1993	1.69 GB	1 MB (W) 512 KB (WD)	7200 RPM	SCSI-2 WIDE	TCQ	512 bytes	1 Serial
ST12550N/ND	one	1993	two.i GB	1 MB	7200 RPM	SCSI-two FAST	TCQ	512 bytes	two Serial
ST12550W/WD	1	1993	2.one GB	i MB (W) 512 KB (WD)	7200 RPM	SCSI-2 WIDE	TCQ	512 bytes	2 Series
ST15150N/ND/DC	iv		iv.19GB	1 MB	7200 RPM	SCSI-ii FAST	TCQ	512 bytes	iv Serial	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-ii Wide	TCQ	512 bytes	2LP Series
ST32550N/ND			ii.09 GB	512 KB	7200 RPM	SCSI-2 FAST	TCQ	512 bytes	2LP Series
ST32550W/WD			2.09 GB	512 KB	7200 RPM	SCSI-ii Wide	TCQ	512 bytes	2LP Series
ST32550WC/DC			two.09 GB	512 KB	7200 RPM	SCSI-two Wide	TCQ	512 bytes	2LP Serial
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-iii Wide-twenty	TCQ	512 bytes	4LP Serial
ST34371N		1996	4.35 GB	512 KB	7200 RPM	SCSI-three FAST-xx	TCQ	512 bytes	4LP Series
ST34371W		1996	4.35 GB	512 KB	7200 RPM	SCSI-3 WIDE-twenty	TCQ	512 bytes	4LP Serial
ST19171N	9	1996	nine.1 GB	512 KB	7200 RPM	SCSI-three FAST-20	TCQ	512 bytes	ix Series	Series Manual
ST19171W/WD/WC/DC	9	1996	9.one GB	512 KB 2 MB	7200 RPM	SCSI-3 WIDE-xx	TCQ	512 bytes	9 Series
ST136475LC/LW	seven	2000	36.4 GB	1 MB or iv MB	7200 RPM	Ultra2 Broad SCSI	TCQ	512 bytes	36 Serial
ST150176LC/LW	7	2000	fifty.1 GB	1 MB or 4 MB	7200 RPM	Ultra2 Wide SCSI	TCQ	512 bytes	l Serial
ST1181677LW/LWV	vii	2000	181.vi GB	4 MB (LW) sixteen MB (LWV)	7200 RPM	Ultra160 SCSI	TCQ	512 bytes	180 Series	Serial 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			xviii.4 GB	2 MB	7200 RPM			512 bytes	36ES Series
ST318437LW/LC			18.4 GB	2 MB	7200 RPM			512 bytes
ST336737LW/LC			36.nine GB	2 MB	7200 RPM			512 bytes
ST318418N	8	2001	18.4 GB	2 MB	7200 RPM	Ultra20 SCSI	TCQ	512 bytes	36ES2 Series	Series Manual
ST318438LW	viii	2001	xviii.four GB	2 MB	7200 RPM	Ultra160 SCSI	TCQ	512 bytes
ST336918N	viii	2001	36.9 GB	2 MB	7200 RPM	Ultra20 SCSI	TCQ	512 bytes
ST336938LW	8	2001	36.nine GB	ii MB	7200 RPM	Ultra160 SCSI	TCQ	512 bytes
ST318436LW			18.3 GB	two MB	7200 RPM		TCQ	512 bytes	18XL Series	Series Manual
ST318436LC			xviii.3 GB	2 MB	7200 RPM		TCQ	512 bytes
ST318436LWV			18.iii GB	4 MB	7200 RPM		TCQ	512 bytes
ST318436LCV			18.3 GB	4 MB	7200 RPM		TCQ	512 bytes
ST318426LW			18.iii GB	1 MB	7200 RPM		TCQ	512 bytes
ST318426LC			eighteen.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			ix.ane GB	4 MB	7200 RPM		TCQ	512 bytes
ST39236LCV			nine.1 GB	4 MB	7200 RPM		TCQ	512 bytes
ST39226LW			9.1 GB	i MB	7200 RPM		TCQ	512 bytes
ST39226LC			9.1 GB	1 MB	7200 RPM		TCQ	512 bytes
ST39216N			ix.1 GB	two MB	7200 RPM		TCQ	512 bytes
ST39216W			9.i GB	ii MB	7200 RPM		TCQ	512 bytes

ATA and SATA models [edit]

Barracuda ATA (1999) [edit]

Bachelor in capacities between half-dozen.viii GB and 28.2 GB, with a 512 KB^[8] enshroud buffer and an ATA/66 interface. This is the starting time model in the Barracuda family equipped with an ATA/IDE interface.^[9]

Barracuda ATA replaced Medalist Pro 6530/9140 drives, which were the earth's first 7200 RPM ATA/IDE drives available on the market place when launched in October 1997.^[10]

Barracuda ATA II (2000) [edit]

Available in capacities between 10 GB and 30 GB, with a 2 MB cache. Supports up to ATA/66 interface.^[11] Seagate announced launch of Barracuda ATA II on Jan 31, 2000.^[12]

Barracuda ATA III (2000) [edit]

Bachelor in capacities between 10 GB and 40 GB, with a ii MB enshroud. Supports up to ATA/100 interface.^[13] Seagate announced launch of Barracuda ATA III on September half-dozen, 2000.^[14]

Barracuda ATA Iv (2001) [edit]

Available in capacities between 20 GB and eighty GB, with a 2 MB enshroud. Supports up to the ATA/100 interface. These drives operate very quietly as they are i of the first difficult drives to apply fluid dynamic bearings in their spindle motors.^[fifteen] Furthermore, their seek times were slowed in firmware to reduce noise output.^[16]

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 starting time generation of Barracuda ATA drives to exist bachelor exclusively with fluid dynamic bearings in spindle motors. Seagate announced their launch on June 27, 2001.^[17]

Barracuda ATA V/ATA V Plus/Series ATA V (2002) [edit]

Available in capacities between 30 GB (60 GB for SATA models) to 120 GB, with 2 MB cache (viii MB in SATA models), with either ATA/100 and SATA/150 interfaces. Barracuda Five with SATA port is one of the first difficult drives to feature a SATA interface.^[18]

The SATA models accept many issues, including random data loss (such equally disappearing partitions). These disks cannot work with some Silicon Prototype SATA controllers, as their drivers blacklist the disks and limit the maximum sectors of each transaction beneath 8 KB (15 sectors), leading to considerably reduced performance.

Seagate announced launch of Barracuda ATA Five on June 24, 2002.^[19]

Barracuda 7200.7/7200.7 Plus (2002-2003) [edit]

Available in capacities between twoscore GB and 200 GB, with ATA/100 and SATA interface options. The drives accept two MB (marketed equally Barracuda 7200.seven) or 8 MB (marketed as Barracuda 7200.7 Plus) of cache, depending on the model.^[20] Seagate announced launch of Barracuda 7200.7 family on December 2, 2002 with 80 GB platters and capacities upward to 160 GB.^[21] Raised capacities upwardly to 200 GB using 100 GB platters became available in September 2003.^[22] 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 nine, with 1 MB of enshroud^[23] and dissimilar actuator mechanism,^[24] became available exclusively to OEMs in early 2003. They were bachelor exclusively with ATA/100 interface. Produced capacities were 80, 120 and 160 GB.

Barracuda 7200.8 (2004) [edit]

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 xvi MB of cache, depending on the model.^[25] It was the beginning generation of Barracuda drives to offer 16 MB of cache. Starting from Barracuda 7200.eight all SATA models are shipped with NCQ feature. Seagate appear launch of Barracuda 7200.eight on June 14, 2004.^[26]

Barracuda 7200.9 (2005) [edit]

Available in capacities betwixt 40 GB and 500 GB, with either ATA/100 or SATA three Gbit/s interfaces and 2 MB, 8 MB or 16 MB of cache, depending on the model. All SATA models were bachelor with new 3 Gbit/s interface (one,five Gbit/s mode is available via jumper). Seagate announced launch of Barracuda 7200.9 on June 8, 2005.^[27]

Certain models of Barracuda 7200.nine drives were too available under Maxtor make, the model name under this brand was DiamondMax 20. It was the oldest generation of Barracuda drives to be likewise offered under Maxtor brand afterward its acquisition by Seagate accept been completed in 2006; model numbers of Maxtor-branded variants are identical as of Seagate ones but brainstorm with STM messages.

Barracuda 7200.10 (2006) [edit]

Seagate Barracuda 7200.10 ST3500630A, 500GB, ATA/100

Available in capacities betwixt 80 GB to 750 GB and either an ATA/100 or SATA 3 Gbit/s interface. ii, viii or xvi MB of cache, depending on the model. This was the first Seagate hard bulldoze to employ perpendicular magnetic recording (PMR) technology (just in 250 GB SATA models: ST3250410AS with sixteen MB of cache and ST3250310AS with viii MB of cache). Seagate announced launch of Barracuda 7200.10 on April 26, 2006.^[28] 250 GB PMR models were launched on June 7, 2007.^[29]

This is the final generation of Barracuda to feature IDE interface on certain models. This is the only generation of Barracuda to characteristic 750 GB as the greatest in storage limit of IDE drive ever fabricated past any manufacturer. Industry'south competitors ended development of IDE hard drives on lower capacities: Hitachi (despite having plans to offering 750 GB and one TB IDE drives^[30] which were somewhen never produced and released^[31]), Maxtor (before its acquisition past Seagate) and Western Digital ended on 500 GB and Samsung ended on 400 GB.

Barracuda 7200.10 drives were also bachelor nether Maxtor make, the model proper name under this brand was DiamondMax 21.

Firmware bug [edit]

The SATA models of this family unit with firmware 3.AAK [codename Galaxy] or older (e.g. iii.AAE^{[ dubious – discuss ]}[codename TONKA]) have introduced a firmware issues:

• There is a performance bibelot using hdparm with an NCQ queue depth of 31 in AHCI mode. Speed test measures only 55–64 MB/s (expected: >lxx–75 MB/s).^[32]

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 office number 9BJ14G-308 (with firmware 3.AAK),
• ST3500830AS with office number 9BJ136-308 and
• ST3500630AS with part number 9BJ146-308.

Barracuda ES (2006) [edit]

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 loftier-reliability drives based on Barracuda 7200.ten design. Intended for business concern-critical use, with all drives having a v-year warranty. Barracuda ES series replaced previous NL35 series (based on 7200.8) and NL35.2 series (based on 7200.ix) enterprise drives. Seagate announced launch of Barracuda ES on June vii, 2006.^[33]

Barracuda 7200.11 (2007) [edit]

With a SATA iii Gbit/s interface, capacities range from 160 GB to 1.5 TB.^[34] Codenames are Moose (earlier revision, using 250 GB platters) and Brinks (later revision, using 333 and 375 GB platters). Their cache size can exist 8 MB, sixteen MB or 32 MB, depending on the bulldoze model.^[35] Seagate announced launch of Barracuda 7200.eleven, along with Barracuda ES.2, on June 25, 2007.^[36] They were also available under Maxtor brand, the model proper noun under this brand was DiamondMax 22.

Alongside normally retailed models, a 2TB version (model number ST32000540AS) was produced in 2009, beingness marked on the label as Barracuda 7200.11; actually it'southward a pre-production series of Barracuda XT drives, installed in certain models of FreeAgent, Expansion and BlackArmor external drives. It uses the aforementioned mechanical pattern as in Barracuda XT and is unrelated to all other Barracuda 7200.xi models. Notable are as well missing various international rubber marks.

Firmware bug [edit]

This family has introduced many severe firmware bugs:

1. Disks may not show and utilize all the cache.^[37]
2. FLUSH_CACHE commands may time out when NCQ is used.^[38]
3. At that place is a operation anomaly using hdparm with NCQ queue depth 31 in AHCI fashion. Speed test measures only 45–fifty MB/s (expected: > 100–110 MB/s).
4. Disks may be inaccessible at ability on.^{[39] [40]}

Disks afflicted by the last bug will non be detected by the calculator BIOS later a reboot. Numerous users accept complained near this and are discussing it in a public forum^[41] when discussions in Seagate's forums^[42] were subjected to heavy moderation and later closed. The symptom of the trouble is that the computer BIOS volition no longer discover the hard disk later a reboot, and upon connecting to the hard disk with a serial TTL lath, this error code will be seen equally "LED:000000CC FAddr:0024A051." Faulty firmware triggers this "failure."

Seagate FreeAgent external drives have likewise utilized 7200.xi hard disks with the SDxx firmware, and failures of these difficult drives were as well reported. The access LED remains permanently on, despite being asunder from USB and no longer beingness recognized by the computer. However, Seagate says that the LED low-cal remaining permanently on had nothing to do with firmware problems. The drives have too get known for their unusually loftier failure rates, including sudden mechanical failures; the rapid development of large numbers of bad sectors; the motherboard detecting the drive equally a unlike model and the drive regularly "freezing" when beingness read from or written to.^{[ citation needed ]}

Other companies have claimed^{[ citation needed ]} 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 issues, Seagate released firmware update AD14 for the affected disk models; to prepare the second, tertiary and fourth bugs, Seagate released firmware updates SD1A, SD1B, SD2B and SD81. The SD2B firmware update for Brinks removes the DCO ATA characteristic from the disks, while SD1A for Moose adds two ATA features.^{[ commendation needed ]}

Barracuda ES.ii (2007) [edit]

Available in capacities between 250 GB (500 GB for SAS models) and ane TB, xvi MB enshroud for SAS models and a 32 MB enshroud for SATA 3 Gbit/due south models. Enterprise-class drives based on 7200.11 series.^[43] SAS models were the first Barracuda drives with server-course interface since the discontinuation of Barracuda 180 in 2004.

Firmware bugs [edit]

Like to the 7200.eleven family, this family unit has introduced many firmware bugs, which was fixed by SN06 firmware released by Seagate:

• RAID arrays using these disks may neglect.^[44]
• Secure Erase control is non handled properly.^[45]
• There is a functioning anomaly using hdparm with NCQ queue depth 31 in AHCI mode. Speed test measures only l MB/s (expected: >100 MB/due south).^[38]
• Disks may be inaccessible at power on.^{[46] [ dubious – talk over ]}

Barracuda ES.two is currently the last production in Seagate's enterprise line to bear the "Barracuda" name. The successor of ES.2, launched in early on 2013,^[47] is branded as "Constellation ES.three" which is based on the design of 14th-generation Barracuda.

Barracuda 7200.12 (2009) [edit]

Available in capacities between 160 GB to ane TB. Initial models (CCxx firmware) supported upwardly to SATA 3 Gbit/s, while after revisions (firmware JCxx) support the newer SATA vi Gbit/s interface.^[48] Their cache size tin 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 oestrus dissipation and claimed reliability improvements. Seagate appear launch of Barracuda 7200.12 on January 5, 2009.^[49] SATA vi Gbit/s models replaced SATA iii Gbit/south models in January 2011.

Barracuda 7200.12 drives were also bachelor under Maxtor make, the model proper name under this brand was DiamondMax 23. Only SATA 3 Gbit/southward models were available under Maxtor brand and was the last generation of DiamondMax drives produced. Seagate phased out Maxtor make in October 2009, reviving it in 2016, except for internal HDDs.

Barracuda XT, LP and Dark-green (13th generation) (2009/x) [edit]

Difficult disk Seagate Barracuda 1500 GB, three.v inch, capacity i.5 TB, built 2011. The head unload ramp is the orangish plastic piece on the right edge of the drive.

Bachelor in capacities between 2 TB and three TB (XT) with 64 MB enshroud, i TB and ii TB (LP) with 16 MB or 32 MB cache, 1 TB, i.5 TB and 2 TB (Greenish) with 16 MB to 64 MB cache depending on model. This is the first Barracuda serial to support SATA vi Gbit/south and its buffer size is 64 MB. Rotation speed is 7,200 RPM for XT, and v,900 RPM for LP and Green.

Barracuda XT was launched on September 21, 2009.^[fifty]

Barracuda XT is intended for high-performance gaming computers and workstations with sustained data transfer rate of 149 MB/due south. LP is designated for mass storage applications favoring low estrus output, repose functioning and better-than-average energy efficiency.

Barracuda Light-green 2000 GB (ST2000DL003)

The Barracuda Light-green series was introduced in December 2010 equally a high-functioning, eco-friendly, low-power internal bulldoze, replacing the Barracuda LP serial.^[51] It is the beginning to use Avant-garde Format sectors and operates at 5900 RPM.

Barracuda XT used re-engineered mechanical blueprint, which featured, for the start time in desktop hard drives from Seagate, a head unload ramp, a feature shared with Western Digital, Toshiba, and HGST drives at the time that keeps the heads from e'er having to touch the platters and drastically improving the rated start/stop cycle count. The same blueprint was later on re-used in Seagate'due south enterprise difficult drives. Original Barracuda LP models used the aforementioned mechanical pattern as used in Barracuda 7200.11 drives, later on ones (and Light-green models), like XT, as well used re-engineered mechanical design, just was dissimilar. It was later re-used in 14th generation of Barracuda drives.

Firmware bugs [edit]

The Barracuda LP series too present firmware issues that might be alleviated past the latest firmware available on the Seagate spider web site (CC35),^[52] although there are reports that drives with the CC35 firmware loaded keep to exhibit the aforementioned problems as earlier firmware releases.^[53] The most commonly referred issue with the Barracuda LP serial drives appears to exist 1 variation or some other of the infamous click of expiry problem; the drive will outset to emit a regular clicking dissonance at some point in its early life (possibly fifty-fifty at outset start) and after some time will fail altogether, often after a few months of use. While the clicking dissonance is emitted, the hard drive is inaccessible and may forestall the BIOS from detecting it.

At that place is also a CC95 firmware (at to the lowest degree some of those drives came equally part of external Seagate FreeAgent drives), only it is not clear whether this build fixes all known issues, and why firmware versions betwixt CC35 and CC95 do not seem to exist.

Barracuda (14th generation) (2012) [edit]

Available in capacities between 250 GB to 3 TB, 7200 RPM, sixteen MB to 64 MB cache, depending on the model. First Seagate hard drives with one TB^[54] 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 dissever low-power design. I model in particular, ST3000DM001, is notable for its high failure rate, ^[55] frequently experiencing bad sector growth and caput crashes.

BarraCuda (16th generation) (2016) [edit]

The successor of the 14th generation Barracuda, branded as "Desktop HDD", was a five,900 RPM serial launched in early on 2013 and was not considered part of the Barracuda line.

"Barracuda" name made a improvement in 2016, stylized by Seagate as BarraCuda. Available in capacities betwixt 500 GB to viii TB. Buffer sizes vary from 32 MB for 500 GB and ane TB models to 256 MB for 3 TB to 8 TB units.^[56] Currently listed BarraCuda drives by and large use shingled magnetic recording (SMR) technology to write data onto platters, and spin upwardly at 5400 RPM (exception is model ST2000DM008, which spins up at 7200 RPM while utilizing SMR engineering science). 500 GB and ane TB models still use perpendicular magnetic recording engineering and spin at 7200 RPM, but they also do not feature load/unload ramps, instead using contact outset/finish technology.^[57]

BarraCuda Pro (2016) [edit]

Bachelor in capacities between 2 TB and fourteen TB. Launched alongside BarraCuda, information technology is described as "Perfect for high operation desktop, creative pro desktop applications, and gaming".^[56] This series has higher read/write operation than standard BarraCuda drives; one PCWorld review noted its consistent read speed throughout its entire capacity, which is unusual for a conventional HDD.^[58]

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, take 512 bytes per sector and write data onto platter using perpendicular magnetic recording engineering.^[59]

Warranty length [edit]

Warranty period is either 1 twelvemonth, 2 years, 3 years or five years from the documented date of purchase, depending on the blazon of product and where it was purchased.^[threescore]

Meet also [edit]

• Seagate SeaShield

References [edit]

1. ^ ^{a b c} "Seagate Ships One Millionth Barracuda and Elite Disc Drives". Seagate Engineering science. 24 Jul 1995. Archived from the original on eighteen September 2021. Retrieved eighteen Sep 2021.
2. ^ "Seagate Delivers Disc Bulldoze with World's Highest Capacity". 2000-11-13. Archived from the original on 2000-12-08. Retrieved 2021-04-26 .
3. ^ "Seagate's Latest Barracuda SCSI Drive Bites Into the Storage Market; Exclusively for Resellers, Distributors, Organisation Integrators and VARs". Seagate Technology. 1 Dec 2001. Retrieved 21 Sep 2021.
4. ^ "New Seagate Barracuda Difficult Drives Assail Again With Serial ATA And 80GB-Per-Disc Technology". Seagate Technology . Retrieved 19 Sep 2021.
5. ^ "Seagate And All-time Purchase First To Offer Serial ATA Hard Drive In Retail". Seagate Technology. 24 Mar 2003. Archived from the original on 2003-06-25. Retrieved 21 Sep 2021.
6. ^ ^{a b} barracuda 3.5 inch family, half-height
7. ^ "PC Mag". PC Magazine: The Contained Guide to IBM-Standard Personal Computing. Ziff Davis, Inc.: 54 2001. ISSN 0888-8507.
8. ^ 1 KB = 1024 B
9. ^ "Seagate Barracuda ATA Transmission" (PDF).
10. ^ "Seagate Unveils Manufacture's First 7,200-RPM, Ultra ATA-Interface Disc Drive for Desktop Computers". 1997-ten-xiii. Archived from the original on 1998-02-01. Retrieved 2021-04-21 .
11. ^ "Seagate Barracuda ATA II Manual" (PDF).
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30. ^ Hitachi Deskstar 7K1000 datasheet, December 2006, IDE models were mentioned
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32. ^ 1 MB = one million bytes
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54. ^ one TB = one thousand billion bytes
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External links [edit]

• Seagate Barracuda Hard Drives
• How to Force Firmware update on the Seagate Barracuda LP

brownkimmilloof.blogspot.com

Source: https://en.wikipedia.org/wiki/Seagate_Barracuda