ATTO EPCI-PWRC-000 Technical Information download pdf (Page 23)

ATTO Technology Inc. ATTO Express Power Center Installation and Operation Manual

Test parameters

Your benchmark results may be tuned using the

following parameters.

Max. Transfer Size

Choices: 32 KB, 128 KB, 512 KB, 2 MB, 8 MB

Default: 32 KB

The Express Power Center Benchmark performs disk

reads of varying sizes on the volume tested. The Max.

Transfer Size option determines the size of the transfers.

To test a drive for applications which transfer smaller

blocks of data, select a smaller value, such as 32

Kilobytes. To test a drive for applications which

transfer larger blocks of data, select a larger transfer

size.

Sample Size

Choices: 8, 16, 32, 48, 64, 80 MB

Default: 48 MB

Adjusting the sample size changes the number of times

each transfer is done during the benchmark test. The

transfers are then averaged for the final result. A larger

sample size provides more accurate results, but causes

the benchmark test to take longer.

Reading Benchmark results

Once the benchmark tests are completed, Express

Power Center graphically displays the average read

transfer rate across all transfer sites tested. The

Benchmark also reports the peak and minimum values

of the read transfer rate test performed.

Average read value,

shown as a flat line on the

graph, indicates the true performance of the drive.

Peak value

is also commonly referred to as the burst

transfer rate.

To get a printout of your results, use the

open Apple-

shift3

function.

System information

Express Power Center reports different types of drive

information based on your system and its

configuration.

To return to the

Utilities Screen,

click on the

Back

button.

Disk Info

provides general information about a disk

retrieved from the system.

Partition Map

is a visual layout of the partitions on

the drive you select.

Management Data

shows RAID configuration

information

System Log

reports recent ATTO activity for the last

10K of the system log.

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ATTO EPCI-PWRC-000 Technical Information Page 23

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