Re: tablespaces a priority for 7.5?

I agree that RAID provides similar performance benifits especially with striping io benifits, however it is powerful
andideal to have both options.  For example you may have a set of tables that are read-only for reporting and another
setmostly write only.   You could have they resting on different raid configurations ideal for each situtation.  
 
 
I also agree there are several admin benifits in the areas of backup.  You can also more easily create different
frequency/schedulesof backup for certain critical tables to a different schedule than other less important tables.
Theflexibility of easily growing your database beyond the current disk because of size limitations can be a life
savior.
 
brian

    -----Original Message----- 
    From: lnd@hnit.is [mailto:lnd@hnit.is] 
    Sent: Wed 1/21/2004 12:22 PM 
    To: Brian Maguire 
    Cc: 
    Subject: RE: [GENERAL] tablespaces a priority for 7.5?
    
    

    In RAID era tablespaces are not such important regarding performance. 

    But for backup/restore - the ability to backup/restore selected tablespaces 
    while leaving other tablespaces is a big thing. 
    The whole point here is: it is assumed that backup/restore of tablespaces can 
    hapen quite quickly and as simple as to copy tablespace files from one 
    location to another(even while database is on - WAL can be used to handle 
    this) - this is compared to dump. 

    For example, index, tempoarary data tablespaces can be lost - not a big deal. 

    Undo(rollback) tablespaces - in a way can be lost as well. 
    While system data tablespace (table structure, stored procedures, etc) - at 
    no cost should be lost.  
    The same way application can be devided in "critical" and "not critical" 
    tablespaces and their backups maintained accordingly. For example, it may not 
    be a big deal to lose year 1996 tables while year 2004 tables should be 
    online. 


    Laimis 

    > -----Original Message----- 
    > From: pgsql-general-owner@postgresql.org 
    > [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Brian Maguire 
    > Sent: 21. janúar 2004 16:06 
    > To: pgsql-general@postgresql.org 
    > Subject: [GENERAL] tablespaces a priority for 7.5? 
    > 
    > 
    > Is support for tablespaces a priority feature for 7.5? I 
    > believe there has been significant development in this area 
    > and it seems that postgres' file structure opens it up nicely 
    > to support it.  What are the chances this will be completed?  
    > 
    > In my opinion, it really is a critical feature to support and 
    > administer enterprise databases.  All the major databases 
    > currently support this and it is a compelling enough reason 
    > drive big users from away from using postgres for their 
    > enterprise/large databases.  It really is a database 
    > administrator's feature.  
    > 
    >  
    > Brian 
    >  
    > 
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