Page 1:Ultra320 SCSI: The Premiere Class In A Performance Test
Page 2:Ultra320 SCSI In Detail
Page 3:Adaptec 39320D-R
Page 4:LSI Logic 20320R
Page 5:Test System: With PCI-X, Please!
Page 6:Test System: Dual Pentium 4 Xeon 2.8 GHz
Page 7:Costly: SCSI Cables
Page 8:Test Setup
Page 9:Benchmark Results
Page 10:I/O Performance
Page 11:Webserver Benchmark
Page 12:Conclusion: Adaptec Ahead At Heavy Loads
|Processor||2x Intel Pentium 4 Xeon, 2.8 GHz|
|RAM||2x 512 MB PC2100/DDR266
Registered, ECC - Samsung
|IDE Controller||SB7440 UltraATA/100 Controller|
|System Hard Drive||IBM Deskstar 60 GXP, IC35040, 40 GB, 7,200 rpm|
|Test Hard Drive||6x Seagate Barracuda 10K.4 (ST 3146807LW), 147 GB, 10,000 rpm, Ultra320 SCSI|
|Display Adapter||nVIDIA GeForce4 MX440, PCI, 64 MB|
|Network Card||Broadcom BCM5703, 1 Gb/s, on board|
|Operating System||Windows 2000 Server SP3|
|Benchmarks and Tests|
|Access Time||ZD WinBench 99 2.0|
|Performance Tests||Intel IOMeter 2003.02.15|
|I/O Performance||Intel IOMeter 2003.02.15|
|Drivers and Settings|
|Graphics Driver||nVIDIA 44.03|
|Drivers||Windows 2000 Server default Chipset drivers|
Because we have not used Intel's IOMeter software often up to this point, we would like to briefly explain the test procedure.
IOMeter allows access patterns to be generated for one or several drives, so that a typical system requirement can be re-created. For this article, we used four test processes:
- Maximum data transfer rate in MB/s
Aggregate Block size Proportion of read accesses Proportion of random accesses 100% 64 kB 100% 0% (sequential)
No doubt this test is very theoretical and only serves the purpose of determining the maximum transfer rate. We are dispensing with write accesses and random accesses - only sequential reading is in demand.
- Maximum I/O performance in I/Os per second
Aggregate Block size Proportion of read accesses Proportion of random accesses 100% 512 Byte 100% 0% (sequential)
In this area, we measured with 1, 4, 8, 16, 64 and 256 I/Os per drive access, since this can vary depending on the controller. Once again, this test only represents a theoretical result, as block sizes of 512 Bytes would hardly be used in practice.
- File server access pattern (recommended by Intel)
Aggregate Block size Proportion of read accesses Proportion of random accesses 10% 512 Byte 80% 100% 5% 1 kB 80% 100% 5% 2 kB 80% 100% 60% 4 kB 80% 100% 2% 8 kB 80% 100% 4% 16 kB 80% 100% 4% 32 kB 80% 100% 10% 64 kB 80% 100%
In this respect, we measured with 4, 16, 64 and 256 I/Os for each access. The distribution of the required block sizes corresponds to the recommendation by Intel and simulates the environment of a typical file server quite efficiently. We used a total of six hard drives, which ensures high usage of the controller.
- Database access pattern
Aggregate Block size Proportion of read accesses Proportion of random accesses 100% 8 kB 67% 100%
The last access pattern is used by other online magazines as well: with a block size of 8 kB, it reflects other database applications.
- Ultra320 SCSI: The Premiere Class In A Performance Test
- Ultra320 SCSI In Detail
- Adaptec 39320D-R
- LSI Logic 20320R
- Test System: With PCI-X, Please!
- Test System: Dual Pentium 4 Xeon 2.8 GHz
- Costly: SCSI Cables
- Test Setup
- Benchmark Results
- I/O Performance
- Webserver Benchmark
- Conclusion: Adaptec Ahead At Heavy Loads