FC SAN has been the work-horse of the storage
industry for quiet sometime now & has been the
default transport protocol for data mirroring for
disaster management and data recovery due to its
performance advantages. But now with the increase in
demand for mirroring solutions for small & medium
sized businesses, the high acquisition and
maintenance costs of FC have propelled iSCSI to be a
cost-effective and viable alternative to FC.
In this book, we attempt to evaluate the performance
of mirroring over iSCSI and show that it can be
performed satisfactorily and economically, without
requiring the costlier FC option. This study involves
the use of a customized caching algorithm deployed on
a SAN for a remote mirroring application running on
iSCSI. It tries to reduce the response time for a
write request by deploying a two-level primary cache
with a faster, smaller backup cache or a faster
primary cache with a two-level backup cache. A
comparative study of the results obtained for
mirroring after deploying these caches over FC and
iSCSI show that iSCSI provides adequate performance
and reliability for a successful deployment of the
mirroring application over it.
industry for quiet sometime now & has been the
default transport protocol for data mirroring for
disaster management and data recovery due to its
performance advantages. But now with the increase in
demand for mirroring solutions for small & medium
sized businesses, the high acquisition and
maintenance costs of FC have propelled iSCSI to be a
cost-effective and viable alternative to FC.
In this book, we attempt to evaluate the performance
of mirroring over iSCSI and show that it can be
performed satisfactorily and economically, without
requiring the costlier FC option. This study involves
the use of a customized caching algorithm deployed on
a SAN for a remote mirroring application running on
iSCSI. It tries to reduce the response time for a
write request by deploying a two-level primary cache
with a faster, smaller backup cache or a faster
primary cache with a two-level backup cache. A
comparative study of the results obtained for
mirroring after deploying these caches over FC and
iSCSI show that iSCSI provides adequate performance
and reliability for a successful deployment of the
mirroring application over it.