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Cache Flush Modifier
Valid values for the cache flush modifier are listed in the following table.
Value
Immediate
250
500
750
1
1500
2
5
10
20
60
120
300
1200
3600
Infinite
Cache Without Battery Enabled
Write caching without batteries enables write caching to continue if the RAID controller module batteries
are completely discharged, not fully charged, or not present. If you set this parameter to TRUE without an
uninterruptible power supply (UPS) or other backup power source, you can lose data if the power to the
storage array fails. This parameter has no effect if write caching is disabled.
Modification Priority
Modification priority defines the amount of system resources that are used when modifying virtual disk
properties. If you select the highest priority level, the virtual disk modification uses the most system
resources, which decreases the performance for host data transfers.
318
Description
Data is flushed as soon as it is placed into the
cache.
Data is flushed after 250 ms.
Data is flushed after 500 ms.
Data is flushed after 750 ms.
Data is flushed after 1 s.
Data is flushed after 1500 ms.
Data is flushed after 2 s.
Data is flushed after 5 s.
Data is flushed after 10 s.
Data is flushed after 20 s.
Data is flushed after 60 s (1 min.).
Data is flushed after 120 s (2 min.).
Data is flushed after 300 s (5 min.).
Data is flushed after 1200 s (20 min.).
Data is flushed after 3600 s (1 hr).
Data in cache is not subject to any age or time
constraints. The data is flushed based on other
criteria that are managed by the RAID controller
module.
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