The pattern of disk access
is largely determined by the precision of key localisation within the structure; less precision yields easier structure maintenance but affords less efficient key searching and visa versa.
The internal structure of the Sentences database has been restructured and disk access
methods have been enhanced to improve performance, scalability and robustness.
Diskeeper also improves the performance of overall disk access
for large disk volumes.
This allows functions like disk access
, command passing, data movement, "heart beat" verification, and many others to be performed simultaneously at high speed over the same set of wires.
SANsymphony-V performs adaptive I/O caching directly on top of Hyper-V to speed up block disk access
while mirroring updates to the other server's virtual disk copy.
Users can partition one day's data across multiple local disk drives, preserving rapid parallel disk access
for single day queries.
They make the distinction between disk seek time at half that of IBM disks and disk access
time--the two are not the same.
With Diskeeper running as an invisible background application continually optimizing disk access
and preventing fragmentation, the potential for a negative impact on the user experience is eliminated," Chernicoff said.
Attendees will also learn: * Why Moore's Law does not apply to disk access
speeds, and how an enormous gap between RAM and disk access
times has resulted; * How the disk-speed barrier limits the efficiency and functionality of traditional disk-centric data stores; and * How memory-centric technologies improve operational performance management.
Integrated storage management policies take this into account and keep those virtual volumes resident in the cache, so that when a retrieval request occurs, data is retrieved at disk access
This is because physical hardware in a virtualized storage environment must support more operating systems and so can undergo even more disk access
and more stress than in a non-virtualized environment.
With its high compression ratio, CogoFS also significantly reduces disk access
to all compressed files, resulting in reduced power consumption and extended hard disk life.