Re: softupdates write cache ata tags topic

2003-03-10 Thread Terry Lambert
Nuno Teixeira wrote: I understand the basic concept of the folowing techs: softupdates, disk write cache and ata tags. My question is: It is safe to use softupdates + write cache + ata tags (IBM disk)? I read someware that it not safe to use softupdate + write cache (without

Re: softupdates write cache ata tags topic

2003-03-10 Thread msch
Hi, Write cacheing is automatically enabled if tagged queueing is enabled and supported by the disk, so I doubt you're seeing any improvement at all. I must admit: My statements are based on experience with SCSI Tagged Queuing and SCSI Write Cache. I hope I'm correct if I assume that the

Re: softupdates write cache ata tags topic

2003-03-10 Thread Dag-Erling Smorgrav
Matthias Schuendehuette [EMAIL PROTECTED] writes: I consider it unnecessary to use WriteCache if TaggedQueuing is enabled and working. (The performace gain of WriteCache and TaggedQueuing is more or less the same, the combination of both adds less than 10% of performance and you shouldn't

softupdates write cache ata tags topic

2003-03-08 Thread Nuno Teixeira
Hello to all, I understand the basic concept of the folowing techs: softupdates, disk write cache and ata tags. My question is: It is safe to use softupdates + write cache + ata tags (IBM disk)? I read someware that it not safe to use softupdate + write cache (without ata tags) and if

Re: softupdates write cache ata tags topic

2003-03-08 Thread Matthias Schuendehuette
Hi, Is it safe to use softupdates + write cache + ata tags (IBM disk)? The summary of *my* experience and knowledge is: It is considered *unsave* to use Soft Updates with WriteCache enabled. I consider it unnecessary to use WriteCache if TaggedQueuing is enabled and working. (The performace