Messages in this thread |  | | | Date | Fri, 5 Jul 2002 22:23:40 +0200 | | From | Matthias Andree <> | | Subject | Re: IBM Desktar disk problem? |
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On Fri, 05 Jul 2002, Thunder from the hill wrote:
> ...and tell all the people who got a DTLA (because it's not as expensive > as others in some countries, mind France, USA, Germany) to drop their > disks if they want to use Linux, because we're too lazy to find a > solution. That might be cool to you, but we want HARDWARE SUPPORT for > Linux! That's why we're here. > > There _is_ a solution, we just have to find it.
Might just be that "coincidence" happens more often as "incident" happens more often. Means: the more drives of that type fails, the more likely it is someone shows up with a report that the failure is related to this-and-that. Until someone can reproduce this, assume the TCQ is Not Guilty in respect to your DTLA failure. Assume it has died a natural death.
And the "incident often" seems to hold for 75GXP series drives (IBM DTLA-3070xx). Out of seven DTLA-307045 (all bought approx. Feb. 2001, in two different stores) I look after I am getting a MTBF(*) of around 28,000 hours -- which is way lower than what IBM claims. Two died after 9 months, another one after 16 months. Other IBM drives, DJNA, DPTA, are way more reliable -- but these are no longer sold.
(Søren Schmidt, FreeBSD ata(4) driver maintainer, says that IBM acknowledged that DJNA have broken TCQ, sometimes forget to flush a block -- this will then probably also affect the WDC-420400 and 418.... 20G 5400/min and 18G 7200/min drives).
(*) Using Fujitsu's formula:
total hours of service of all drives MTBF = -------------------------------------- number of failed drives to date[unhandled content-type:application/pgp-signature] |  |