Last modified 9 years ago Last modified on 02/15/2010 05:41:34 PM

This page is about serving DC3b data to friendly users. These requirements apply to data access for all three Performance Tests.

High Level Requirements

This section is owned by TimA.

Number of Named Users <10
Number of Concurrent Queries <5
Number of Concurrent File Downloads <5
Level of technical competence High (able to write their own SQL queries)
Level of access needed read-only
Response time for Low volume queries <1 minute
Response time for High volume queries <1 hour (for object table scans)
<4 hours (for source/forcedsource table scans)
Response time for Superhigh volume queries <10 hours
Availability Available > 18 hrs/day (e.g. 6AM-12midnight CT)
No more than three consecutive days per outage
No more than 1 outage every two weeks
Available until 31-Dec-2011
(See comments below. -MikeF)
Image Retrieval Latency Many images will be on tape, so retrieval delays will occur.
(This may be more of an education issue. -MikeF)

Technical Requirements


This section is owned by JacekB.

DB Server to Disk Storage Bandwidth 300 MB/s *
Storage Capacity None beyond that already provided for the DC3b runs. See DC3bHardwareRequirements *
Server Memory 16 GB *
Number of Cores 8 *
  • From the Dec8 DC3 call

Image Retrieval

Storage Capacity (for tape cache) ?
File Servers ?