[dba-Tech] Super Databases

The newer ASUS mother-boards all have this feature built into their systems.
It is not really a hibernate type feature as the whole system drops power,
in increments and then snaps to full life when demands are being made. Even
the fans accelerate and decelerate depending on system temperature. 

I was really surprised when checking a client's server room late at night to
find the room very quiet and then a remote request would come in and one or
more units would power up fast. I must admit I jumped. ;-)

Jim   

-----Original Message-----
From: dba-tech-bounces at databaseadvisors.com
[mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Gustav Brock
Sent: Thursday, February 19, 2009 8:24 AM
To: dba-tech at databaseadvisors.com
Subject: Re: [dba-Tech] Super Databases

Hi All

I've found one error in that article. The author mentions power consumption
as an important if not prohibitive factor when building such peta database
storage: Tapes use no power while disc drives do.

That's right. A tape uses zero power but the tape reader does. However, if
you spin down a harddrive, isn't the power consumption close only a tiny
fraction of the power used when spinning?
If so, a technique to spin down harddrives would be very nice. And if the
drive could do this all by itself - no access for a minute => spin down -
wouldn't that be clever? And still much faster than a tape storage unit.

/gustav


>>> accessd at shaw.ca 18-02-2009 20:06 >>>
For those that are interested here is a link to an article on one of the
crop of new super size databases that are trying to meet the demand of the
ever growing data storage issues: 

http://www-db.cs.wisc.edu/cidr/cidr2005/papers/P06.pdf 

Jim


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