Hitachi Deskstar

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The Deskstar is the name of a product line of computer hard drives. It was originally produced by IBM until Hitachi bought IBM's hard drive division in 2002. From then on it was called the Hitachi Deskstar.

The last of the Deskstar series produced under IBM name was the 180GXP.

After Hitachi had acquired IBM's storage division, Hitachi still sold Deskstar 120GXP and Deskstar 180GXP, but under the Hitachi brand.

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[edit] Deskstar failures

The IBM Deskstar 75GXP, and several other models made around the same time, became infamous for their reportedly high failure rates. This led to the drives being colloquially referred to as "Deathstars".

[edit] Lawsuit

Despite failures being reported within the manufacturer warranty period (3 years), Michael T. Granito, Jr., an American user of IBM's 75GXP hard drive, filed a class-action lawsuit against IBM on 2001-10-16 for defects in the product causing it to "crash".[1] Without admitting responsibility, IBM settled this lawsuit in 2005.[2]

[edit] Details

A firmware update (details) gives a clue to some of the issues:

  • Possible data corruption due to a problem with S.M.A.R.T. background operations.
  • Application of wear levelling to avoid the heads dwelling too long over the same area

The drives were also known for commonly head crashing. The combination of two relatively new (at the time) technologies, GMR heads and glass platters may be largely to blame for the issues.

In addition to the failure that had led to the lawsuit, additional flaws were found in Deskstar 60GXP, 75GXP, 120GXP, 180GXP, which are caused by Giant Magneto Resistive read / write heads, and the easily corrupted NVRAM chip.[3]

[edit] Aftermath

Since the filing of lawsuit, IBM unveiled Deskstar 120GXP, Travelstar 60GH and 40GN in 2001-11-07.[1] The Deskstar documentation was updated to show the drives had been rated to 333 power-on hours per month (45 percent), leading to speculation that was the result of the lawsuit. However, IBM spokesperson replied that the rating is not new at the time.[2]

In June 2002, Hitachi and IBM reached a framework agreement under which Hitachi would purchase IBM's HDD operations. The deal was closed on 2002-03-31. On 2003-01-06, Hitachi announced the new hard disk drive storage company is named Hitachi Global Storage Technologies.[4] After finalising the sale of the storage division, IBM announced taking $2 billion charge in its second quarter.[5]

[edit] Products

[edit] IBM models

  • Deskstar DALA-3540
  • Deskstar DALS-3540 (SCSI)
  • Deskstar DJAA-31270/31700
  • Deskstar DSAA-3270/3360/3540/3720
  • Deskstar DSAS-3270/3360/3540/3720 (SCSI)
  • Deskstar XP
  • DPEA-30540/30810/31080
  • DPES-30540/30810/31080 (SCSI)
  • Deskstar 3
  • DAQA-32160/32700/33240
  • Deskstar 4
  • DCAA-32880/33610/34330
  • Deskstar 5
  • DHEA-34330/36480
  • Deskstar 8
  • DHEA-38451/36481/34331
  • Deskstar 14GXP
  • DTTA-371440/371290/371010
  • Deskstar 16GP
  • DTTA-351680/351290/351010/350840/350640/350430/350320
  • Deskstar 22GXP
  • DJNA-372200/371800/371350/379100
  • Deskstar 25GP
  • DJNA-352500/352030/351520/351010
  • Deskstar 34GXP
  • DPTA-373420/372730/372050/371360
  • Deskstar 37GP
  • DPTA-353750/353000/352250/351500
  • Deskstar 40GV
  • DTLA-305040/305030/305020
  • Deskstar 75GXP
  • DTLA-307075/307060/307045/307030/307020/307015
  • Deskstar 60GXP
  • IC35L010AVER07, IC35L020AVER07, IC35L030AVER07, IC35L040AVER07, IC35L060AVER07
  • Deskstar 120GXP
  • IC35L120AVVA07-0, IC35L100AVVA07, IC35L080AVVA07-0, IC35L060AVVA07-0, IC35L040AVVA07-0, IC35L040AVVN07-0, IC35L020AVVN07-0)
  • Deskstar 180GXP
  • IC35L180AVV207-1, IC35L120AVV207-0, IC35L120AVV207-1, IC35L090AVV207-0, IC35L090AVV207-1, IC35L060AVV207-0 (40, 40 optimized, 60 GB), IC35L030AVV207-0)

[edit] Hitachi models

  • Deskstar 120GXP
  • IC35L120AVVA07-0, IC35L100AVVA07, IC35L080AVVA07-0, IC35L060AVVA07-0, IC35L040AVVA07-0, IC35L040AVVN07-0, IC35L020AVVN07-0)
  • Deskstar 180GXP
  • IC35L180AVV207-1, IC35L120AVV207-0, IC35L120AVV207-1, IC35L090AVV207-0, IC35L090AVV207-1, IC35L060AVV207-0 (40, 40 optimized, 60 GB), IC35L030AVV207-0)
  • Deskstar 7K80
  • HDS728040PLA320, HDS728080PLA380 (SATA)
  • HDS728040PLAT20, HDS728080PLAT20
  • Deskstar 7K160
  • HDS721616PLA380, HDS721680PLA380 (SATA)
  • HDS721616PLAT80, HDS721680PLAT80
  • Deskstar 7K250
  • HDS722540VLAT20, HDS722580VLAT20, HDS722512VLAT20, HDS722512VLAT80, HDS722516VLAT20, HDS722516VLAT80, HDS722525VLAT80
  • HDS722540VLSA80, *HDS722580VLSA80, HDS722512VLSA80, HDS722516VLSA80, HDS722525VLSA80 (SATA)
  • Deskstar T7K250
  • HDT722520DLA380, HDT722525DLA380, HDT722516DLA380 (SATA)
  • HDT7225DLAT80, HDT722516DLAT80, HDT722520DLAT80
  • Deskstar 7K400
  • HDS724040KLAT80
  • HDS724040KLSA80 (SATA)
  • Deskstar 7K500
  • HDS725050KLAT80
  • Deskstar E7K500
  • HDS725050KLA360, HDS725050KLA361) (SATA)
  • Deskstar T7K500
  • HDT725050VLAT80, HDT725040VLAT80, HDT725032VLAT80, HDT725025VLAT80
  • HDT725050VLA380, HDT725040VLA380, HDT725032VLA380, HDT725025VLA380, HDT725050VLA360, HDT725040VLA360, HDT725032VLA360, HDT725025VLA360 (SATA)
  • Deskstar 7K1000
  • HDS721075KLA330, HDS721010KLA330 (SATA)
  • Deskstar P7K500
  • HDP725050GLAT80, HDP725040GLAT80, HDP725032GLAT80, HDP725025GLAT80
  • HDP725050GLA380, HDP725040GLA380, HDP725032GLA380, HDP725025GLA380, HDP725050GLA360, HDP725040GLA360, HDP725032GLA360 (SATA)

[edit] References

  1. ^ IBM hit with hard drive class action suit
  2. ^ Hard Drives: Recovery
  3. ^ Data Recovery from IBM Deskstar hard disk drives
  4. ^ Hitachi Establishes "Hitachi Global Storage Technologies," Taking A Bold New Step for Storage Innovation
  5. ^ IBM To Take $2bn charge for layoffs, HDD sale

[edit] External links