To test backup and restore time and throughput, we used a test-bed consisting of a file server containing sample data, a connecting switch, and a backup server running the backup software. The backup server also held the database and media catalogs and provided the SCSI connection to our tape devices.
Our file server was an IBM xSeries 230 with a 1-GHz PIII and 1GB of RAM. The units ServRAID 4M Ultra160 controller was connected to a 64-bit PCI slot and configured for RAID 5. Each of the servers five hard drives ran at 10,000 rpm with 18GB capacity. The total data volume was 68GB and contained our 52GB workload. The data was handed off through a 64-bit Linksys Instant Gigabit Network Adapter EG1064 to a Linksys ProConnect II Layer 2 Management 4-Port Gigabit Ethernet Switch. Also connected to the switch was our backup server, a white-box unit with dual AMD Athlon 2200+ processors and 1GB of RAM. This server was equipped with a Linksys Instant Gigabit Network Adapter EG1064 and an Adaptec SCSI Card 29160 with an Ultra160 LVD interface. Both were connected via a 64-bit PCI interface for maximum performance.
Our test workload was a cross section of last years PC Magazine production data. We used 129,111 files in 12,151 directories, which amounted to exactly 52,483,388,473 bytes (just over 52GB). We chose Veritas Backup Exec 8.6 because it is one of the most advanced yet easy-to-configure backup solutions.