Fujitsu ETERNUS DX60 S3 User Manual page 688

Appendix A Parameter List
A.1 System Management
• Caching Priority
Description
Input condition/
Display contents
This parameter is used for performance tuning. It is not necessary to change the default setting ("10 (Fastest)") for
normal use.
• Monitoring I/O
Description
Input condition/
Display contents
A.1.3.9 Setup Exclusive Read Cache
For details about this function, refer to
For the factory default settings for this function, refer to
●
Cache Size Settings
• Exclusive Read Cache
Description
Input condition/
Display contents
A.1.3.10 Setup Disk Drive Patrol
For details about this function, refer to
This parameter specifies the concurrency for storing data in EXC or EXCP.
The greater the value is, the higher the concurrency is set for storing data in EXC or EXCP.
The smaller the value is, the lower the concurrency is set for storing data in EXC or EXCP.
This item is displayed only when using the controller firmware version V10L4x or later.
10 (Fastest) - 1
Select the target I/O type that is to be monitored for data storing to the cache.
This parameter affects how frequently data is stored in the EXC or EXCP.
•
Read
•
Read / Write
"1.4.10 Setup Exclusive Read Cache" (page
Select the exclusive read cache ratio for the CM cache memory.
The actual capacity of the exclusive read cache varies depending on the memory size
installed in the ETERNUS DX.
Exclusive read cache capacity = Cache area for user data (*1) x Exclusive read cache (%)
*1: Cache area for user data = (Memory size per CM - Active table area (such as copy
table size)) / 2 (*2)
*2: To mirror the user data, divide the calculated value in half.
•
0 %
•
5 %
•
10 %
•
15 %
•
20 %
•
25 %
•
30 %
"1.4.11 Setup Disk Drive Patrol" (page
688
ETERNUS Web GUI User's Guide (Settings)
Copyright 2015 FUJITSU LIMITED
59).
"Appendix B Setup Exclusive Read Cache" (page
61).
975).
P2X0-1270-13ENZ0