FY06 - AUGUST 2006 - NERSC AVAILABILITY STATISTICS
 
SEABORG JACQUARD REGENT ARCHIVE NGF DAVINCI BASSI
 
DAVINCI
DAVINCI AUGUST 2006 ● Scheduled Availability Averages
DAVINCI AUGUST 2006 ● Monthly Availability
DAVINCI AUGUST 2006 ●  Overall System Availability Averages
DAVINCI AUGUST 2006 ●  Monthly Availability Percentages
DAVINCI AUGUST 2006 ●  Systems Availability Details 
● System Availability Statistics - Main Page ●
Availability percentages are calculated using gross wall clock time. Outages/periods of unavailability (downtime) are subtracted from the total wall clock hours and presented as the percentage of the time the system was available to the users. The downtimes are scheduled and unscheduled periods of non-availability grouped into the following three categories: Hardware (H/W), Software (S/W), and Other (Other). The Other category includes unavailable time caused by power outages, environmental conditions and planned power-downs for equipment relocations or computer room modifications, security related conditions, etc.
To view a summary of number of downtimes and cumulative hours, go to the 
Systems Availability Details.
Back to Top of Page
Back to Top of Page
Back to Top of Page
Back to Top of Page
FY06 Monthly Availability Percentages up to AUGUST of FY06
  OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MATH/VIS                        
DAVINCI 100.00% 100.00% 98.80% 99.89% 92.83% 100.00% 99.09% 100.00% 100.00% 99.30% 98.35%  
      ` System Availability Details        
  FY06 - AUGUST 2006  
   
        Scheduled Un-Scheduled Overall Sched *MTBI **MTTR ***MTBF  
  System H/W S/W H/W S/W Other Avail % Avail % (Hours) (Hours) (d hh:mm)  
  DAVINCI 99.98% 99.23% 99.76% 99.23% 100.00% 98.20% 98.98% 0 5.6 10 17:58  
                         
  *Mean Time Between Interruptions = Total wall clock hours/total number of downtime periods    
  **Mean Time To Restoral = Total downtime hours/total number of downtime periods    
  ***Mean Time Between Failures = Total wall clock hours - Total downtime hours/Total downtime hours -1  
        Outage Hours & Number of Occurrences        
  FY06 - AUGUST 2006  
   
          Scheduled Un-Scheduled Total Total Number of Outages  
  System H/W S/W H/W S/W Other Downtime Avail Hrs H/W S/W Other  
  DAVINCI 1:45 61:47 19:20 61:52 0:00 144:44 8040 4 24 0  
                         
Back to Top of Page