aggregators, or network file managers, are great for companies
consolidating NAS data from a number of different vendor NAS products or
retaining multivendor NAS configurations. The primary advantage of these
products is their support for a single namespace across all NAS boxes
under their control. Their main disadvantage is that they add another box
with additional overhead to the storage environment that needs to be
installed, configured and maintained.
Acopia Networks Inc.'s Adaptive Resource Switch (ARX) is an in-band
aggregator of NAS services. It supports remote site replication across
heterogeneous NAS boxes and can provide quick access to remote data if
primary site data services go down. Acopia offers a high-availability option
with two boxes configured as an active/active or active/passive pair. There
are three ARX models that provide different levels of performance. As with
any in-band appliance, bandwidth requirements are an important
consideration for any deployment.
Acopia also allows policy-based migration of files. Policy scripts can be set
up to migrate files from an active box to a less active one to smooth
performance and free high-performance storage. To provide file-level
migration and quick global name access, Acopia duplicates all file directory
information at its appliance.
NeoPath Networks Inc.'s File Director is another in-band aggregation
appliance. It allows transparent migration of data from one NAS box to
another. For high availability, a pair of boxes can be set up in an
active/passive configuration. One disadvantage of in-band appliances such
as NeoPath's File Director and Acopia's ARX, is that all of the data goes
through one box; it must therefore sustain data bandwidth equivalent to the
current combined back-end NAS workload.
NuView Inc.'s StorageX is a software product running on Windows 2000
Server configured as an out-of-band appliance that uses Windows Active
Directory to provide a GNS. As an out-of-band appliance, it doesn't hinder
file read/write operations, but it also doesn't allow fully transparent
migration of data from one NAS box to another. However, it automates
much of the manual work required to migrate data from one share to
another. Implemented on a Windows server, StorageX also supports NFS
access.
EMC's Rainfinity RainStorage is an in-band and out-of-band appliance.
When migrating file data from one NAS box to another it acts as an in-
band appliance; otherwise it's out-of-band. RainStorage switches can be
(1 páginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais