Hitachi G1000 - Details for SOM 122

Operation with Mode 15 ON Operation with Mode 15 OFF
If a drive failure occurs in read processing, a correction
read processing is executed immediately.
If a drive failure occurs in read processing, a retry
processing corresponding to the type of failure is
executed
I/O watching time is reduced from 6.5 sec to 4.5 sec. I/O watching time is 6.5 sec.
Read or write processing is not retried for time-out
failure.
Read or write processing is retried for time-out failure
Details for SOM 122
Table D-3 shows the results of the pairsplit/pairresync command from CCI.
Table 34 SOM 122 pairsplit operations
CCI setting
Controller setting
Split type
Command -fq option
Environment variable
HORCC_SPLT
System Option
Mode122
pairsplit Normal None ON Steady Split
OFF Steady Split
Normal ON Steady Split
OFF Steady Split
Quick ON Steady Split
OFF Steady Split
Quick None ON Quick Split
OFF Quick Split
Normal ON Quick Split
OFF Quick Split
Quick ON Quick Split
OFF Quick Split
None None ON Steady Split
OFF Quick Split
Normal ON Steady Split
OFF Steady Split
Quick ON Quick Split
OFF Quick Split
Table 35 SOM 122 pairresync operations
CCI setting
Controller setting
Split type
Command -fq option
Environment variable
HORCC_SPLT
System Option
Mode87
System Option
Mode122
pairresync Normal None ON ON Normal Resync
System option modes 177
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide