Fujitsu Eternus DX600 S3 - Page 683

Appendix A Parameter List
A.1 System Management
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED P2X0-1270-13ENZ0
683
Availability of the EXC setting according to the number of installed PFMs
Extreme Cache Pool
Use RAID groups that are configured with SSDs installed in the CE or DE as the
secondary cache memory.
EXCP must be set for each CM. A different memory size can be set for each CM.
EXCP can only be used for Read I/O to a volume that is controlled by the
Controlling CM of the RAID group.
Enabling or disabling EXCP for each volume can be performed with ETERNUS Web
GUI. Refer to "3.14 Modify Cache Parameters" (page 316)
for details.
• For the ETERNUS DX100 S3/DX200 S3, a RAID group for EXCP is configured
with RAID0 (1D).
• For the ETERNUS DX500 S3/DX600 S3, a RAID group for EXCP is configured
with RAID0 (1D), RAID0 (2D), RAID0 (3D), or RAID0 (4D).
• For the ETERNUS DX8700 S3/DX8900 S3, a RAID group for EXCP is configured
with RAID0 (1D), RAID0 (2D), RAID0 (3D), or RAID0 (4D).
Available models are as follows:
• ETERNUS DX100 S3
• ETERNUS DX200 S3
• ETERNUS DX500 S3
• ETERNUS DX600 S3
• ETERNUS DX8700 S3
• ETERNUS DX8900 S3
The maximum available cache memory size (per CM) for each model is as fol-
lows.
• For the ETERNUS DX100 S3/DX200 S3
400GB
• For the ETERNUS DX500 S3/DX600 S3
1600GB
• For the ETERNUS DX8700 S3/DX8900 S3
1600GB
The cache memory size depends on the capacity of the SSD registered as EXCP.
However, a capacity that exceeds the maximum available cache memory size
cannot be set. Refer to "Available EXCP memory size" (page 684)
for details.
PFM installation
Enabling or disabling EXC Changing the EXC memory size
ETERNUS
DX500 S3/
DX600 S3
ETERNUS
DX8700 S3/
DX8900 S3
ETERNUS
DX500 S3/
DX600 S3
ETERNUS
DX8700 S3/
DX8900 S3
PFMs are
installed in all
of the CMs
The same number of
PFMs is installed
Available Available Available Available
The number of
installed PFMs does
not match among the
CMs
Available Available N/A Available
PFMs are not installed in some CMs N/A Available N/A Available
No PFMs are installed in any CMs N/A N/A N/A N/A
Cache Description