Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-14 Thread Lincoln Yeoh
At 11:53 AM 5/12/2006 -0400, Tom Lane wrote: Scott Ribe <[EMAIL PROTECTED]> writes: >> My damn powerbook drive recently failed with very little warning > It seems to me that S.M.A.R.T. reporting is a crock of shit. I've had ATA > drives report everything OK while clearly in the final throes of

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-12 Thread Tom Lane
Scott Ribe <[EMAIL PROTECTED]> writes: >> My damn powerbook drive recently failed with very little warning > It seems to me that S.M.A.R.T. reporting is a crock of shit. I've had ATA > drives report everything OK while clearly in the final throes of death, just > minutes before total failure. FWI

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-12 Thread Scott Ribe
> My damn powerbook drive recently failed with very little warning It seems to me that S.M.A.R.T. reporting is a crock of shit. I've had ATA drives report everything OK while clearly in the final throes of death, just minutes before total failure. -- Scott Ribe [EMAIL PROTECTED] http://www.kille

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Joshua D. Drake
Hmm... I should figure out how to have OS X email me daily log updates like FreeBSD does... Logwatch. -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL so

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Bruce Momjian
Jim C. Nasby wrote: > On Thu, May 11, 2006 at 07:20:27PM -0400, Bruce Momjian wrote: > > Joshua D. Drake wrote: > > > > > > >> You want an in-depth comparison of how a server disk drive is > > > >> internally > > > >> better than a desktop drive: > > > >> > > > >> > > > >> http://www.seag

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Jim C. Nasby
On Thu, May 11, 2006 at 07:20:27PM -0400, Bruce Momjian wrote: > Joshua D. Drake wrote: > > > > >> You want an in-depth comparison of how a server disk drive is internally > > >> better than a desktop drive: > > >> > > >> > > >> http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_In

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Bruce Momjian
Joshua D. Drake wrote: > > >> Well western digital and Seagate both carry 5 year warranties. Seagate I > >> believe does on almost all of there products. WD you have to pick the > >> right drive. > > > > That's nice, but it seems similar to my Toshiba laptop drive experience > > --- it breaks,

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Joshua D. Drake
Well western digital and Seagate both carry 5 year warranties. Seagate I believe does on almost all of there products. WD you have to pick the right drive. That's nice, but it seems similar to my Toshiba laptop drive experience --- it breaks, we replace it. I would rather not have to replace

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Bruce Momjian
Joshua D. Drake wrote: > > >> You want an in-depth comparison of how a server disk drive is internally > >> better than a desktop drive: > >> > >> > >> http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf > > > > BTW, someone (Western Digital?) is

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Jim C. Nasby
On Thu, May 11, 2006 at 03:38:31PM -0700, Joshua D. Drake wrote: > > >>You want an in-depth comparison of how a server disk drive is internally > >>better than a desktop drive: > >> > >> > >> http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf > >

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Joshua D. Drake
You want an in-depth comparison of how a server disk drive is internally better than a desktop drive: http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf BTW, someone (Western Digital?) is now offering SATA drives that carry the same MTBF

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Jim C. Nasby
On Tue, May 09, 2006 at 08:59:55PM -0400, Bruce Momjian wrote: > Joshua D. Drake wrote: > > Vivek Khera wrote: > > > > > > On May 9, 2006, at 11:51 AM, Joshua D. Drake wrote: > > > > > >> Sorry that is an extremely misleading statement. SATA RAID is > > >> perfectly acceptable if you have a hard

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-11 Thread Ron Mayer
On May 9, 2006, at 11:26 AM, Joshua D. Drake wrote: Of course not, but which drives lie about sync that are SATA? Or more specifically SATA-II? With older Linux drivers (before spring 2005, I think) - all of them - since it seems the linux kernel didn't support the write barriers needed to forc

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-10 Thread Florian Weimer
* Hannes Dorbath: > + Hardware Raids might be a bit easier to manage, if you never spend a > few hours to learn Software Raid Tools. I disagree. RAID management is complicated, and once there is a disk failure, all kinds of oddities can occur which can make it quite a challenge to get back a non

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-09 Thread Bruce Momjian
Joshua D. Drake wrote: > Vivek Khera wrote: > > > > On May 9, 2006, at 11:51 AM, Joshua D. Drake wrote: > > > >> Sorry that is an extremely misleading statement. SATA RAID is > >> perfectly acceptable if you have a hardware raid controller with a > >> battery backup controller. > >> > >> And do

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-09 Thread Joshua D. Drake
Vivek Khera wrote: On May 9, 2006, at 11:51 AM, Joshua D. Drake wrote: Sorry that is an extremely misleading statement. SATA RAID is perfectly acceptable if you have a hardware raid controller with a battery backup controller. And dollar for dollar, SCSI will NOT be faster nor have the hard

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-09 Thread Scott Marlowe
On Tue, 2006-05-09 at 04:16, Hannes Dorbath wrote: > Hi, > > I've just had some discussion with colleagues regarding the usage of > hardware or software raid 1/10 for our linux based database servers. > > I myself can't see much reason to spend $500 on high end controller > cards for a simple R

Re: [GENERAL] [PERFORM] Arguments Pro/Contra Software Raid

2006-05-09 Thread Grega Bremec
-BEGIN PGP SIGNED MESSAGE- Hash: RIPEMD160 Hannes Dorbath wrote: > Hi, > > I've just had some discussion with colleagues regarding the usage of > hardware or software raid 1/10 for our linux based database servers. > > I myself can't see much reason to spend $500 on high end controller >