Vmirror is designed for easy operation with Apple storage.
Mirroring and failover is managed automatically by Vmirror, which is made fully transparent to system
and storage by built-in virtualization. To connected hosts, Vmirror-protected Xserve RAID appears as
an unbreakable volume, impervious to component outages. No host software or drivers are required,
reducing administration and eliminating CPU overhead.
4Gbit Acceleration with Uninterruptible Video Streaming
Vmirror 4G delivers a sustained throughput of over 700MB/sec when used with mirrored Xserve
RAID or Apple-compatible storage systems such as Promise Technology's VTrak RAID. Higher throughput
comes not only with 4Gbit Fibre Channel implementation, but also through read and write caching,
command re-ordering, video read modes to enhance isochronous data delivery, and read/write filtering
that reduces video streaming interruptions.
In addition, enhanced availability levels are provided by Vpath™ software and specially designed
Vmirror 4G hardware options. Vpath software continuously monitors HBA operation through the SCSI
device services layer, providing HBA failover protection in addition to Mac OS X device driver
safeguards. For video applications, Vpath's dual-channel read option can be paired with video read
mode to concurrently stream mirrored data. Should an interruption occur on either data path,
Vmirror 4G shifts to the alternate path at full streaming rates-with no frame drops.