Table 39 SOM 784 operational specifications
MCU and RCU
Operational specification
Model
Microprogram version
SOM 784 setting
Pair creation, resync
RI/O MIH time
reduction
VSP G1000, VSP
G1500, and VSP
F1500
All supported versions
OFF
Normal end
Disabled
VSP G1000, VSP
G1500, and VSP
F1500
All supported versions
ON
Normal end
Enabled
Details for SOM 803
Table 40 SOM 803 behavior
SOM 803
Protect V-VOLs when I/O fails to Blocked Pool VOL
Behavior
OFF
Disabled
DRU Protect attribute is not set
OFF
Enabled
DRU Protect attribute is set
ON
Disabled
DRU Protect attribute is not set
ON
Enabled
DRU Protect attribute is set
Details for SOM 855
Table 41 SOM 855 behavior with SOM 467
SOM 467
SOM 855
WP
To 57%
58% to 60%
61% to 63%
64% to 75%
Over 76%
ON
ON
Normal copy
Copy after destaging
Copy stops
OFF
Normal copy
Copy stops
OFF
ON/OFF
Normal copy
Copy stops
Details for SOM 897, SOM 898, and SOM 901
Table 42 Relations among SOM897, SOM898, and SOM901
SOM 901
Type of Tier1
Tier1 and Tier2 gray zone
Tier2 and Tier3 gray zone
ON
SSD
SOM 901
Combination of SOM 897 &SOM 898
Not SSD
Combination of SOM 897 & SOM 898
OFF
SSD
Combination of SOM897 & SOM898
180
System option modes
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
Содержание F1500
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