Fujitsu ETERNUS DX S5 Series - Performance Index; Table 74 Performance Requirements (During Random Access) for the ETERNUS DX

Performance Index
This section describes the performance index when configuring a NAS environment.
Although the
ETERNUS DX has sufficient throughput, the performance degrades when the load is high.
Performance requirements (indices for process performance) must be taken into consideration.
The following table provides the performance requirements for the ETERNUS DX.
Table 74 Performance Requirements (during Random Access) for the ETERNUS DX
Item For a system focusing on online response For a system focusing on batch throughput
CM (CPU) busy ratio 80% or less 90% or less
Disk busy ratio 60% or less 80% or less
Response time 20ms or less (No standard value)
The performance requirements in Table 74
are based on the items below that are measured with ETERNUS SF
Storage Cruiser when the SAN function is used.
• CM (CPU) busy ratio
CM load (CPU usage) ratio
• Disk busy ratio
Disk usage busy ratio
• Response time
Read and Write response times for each LUN and RAID groups (ms)
4. NAS Functions
Performance Index
197 Design Guide