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TM
CacheAssure
is a maintenance-free, flash-based data protection feature that safeguards against the loss of
cached data during a power or system failure. CacheAssure is optional on both Desktop and Embeddable
models.
In the event of a power or system failure,
CacheAssure instantly detects the failure and
preserves the cached data in Non-Volatile memory,
allowing users to maintain their data until power is
restored. CacheAssure provides quick and easy
access to cached data upon system re-boot by
keeping the data in Non-Volatile memory until all the
drives are ready to accept the transfer and data is
verified. Competitive solutions immediately flush the
cached data upon system re-boot, risking data loss in
the event the drives are offline and not available.
CacheAssure requires no maintenance, no monitoring
and no replacement. The power module charges in 10
minutes and the Non-Volatile (NV) Memory Module
can then hold the data for up to 10 years. Once power
is restored, the FastStream will write all cached data
out to the drives. CacheAssure will be ready for
another power disruption in just 10 minutes.
Benefits of CacheAssure
Lifetime Backup - CacheAssure protects cached
data for up to 10 years, offering a more substantial
return on investment. Typical battery backup units last
approximately 1 or 2 years and only provide upwards
of 72 hours of data protection.
Immediate RAID Protection - Maintain productivity
levels with immediate response times when there is a
power system failure (batteries require up to 8 hours of
charging time). This provides peace-of-mind over long
holiday weekends or extended periods of facility
closure.
Zero Maintenance - Monitoring the charge levels of
batteries is an ineffective use of resources and the
replacement of batteries, which age and wear out
more rapidly, often requires system downtime.
CacheAssure eliminates these concerns.
Environmentally-Friendly - CacheAssure is a
battery-less technology that is not required to adhere
36
ATTO Technology Inc. FastStream SC Installation and Operation Manual
6.3 CacheAssure
to strict disposal regulations. This reduces the costs
and the negative environmental effects associated
with battery disposal.
CacheAssure Status
CacheAssure Status is displayed on the Health and
Status Monitor page.
Disk write caching can be enabled or disabled from the
Modify Options page or during RAID Group creation
in ExpressNAV. This is a global option and all RAID
groups are affected.
For LED Functionality on Desktop FastStreams, see
NVCache LED Indicator
FastStreams, see
on page
Note
FastStream models with CacheAssure have
disk write caching disabled by default.
Disabling disk write caching ensures data
integrity in the event of a power failure and can
lower write performance of attached disk
drives. Disk write caching can be enabled to
override ATTO's recommended default setting
while improving disk write performance. In the
event of a power failure with disk write caching
enabled there is a chance that data residing in
the disk write cache during a power failure or
catastrophic event will result in the loss of that
data.
. For Embedded
FibreBridge LEDs in the Appendix
xxvii.
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