Microsoft® Windows Storage Server 2003 White Paper
Table 6. Features Enhancing System Reliability and Data Availability
Reliability/
Availability
Additional Information
Volume Shadow Copy
Service (VSS)
Enables up to 512 point-in-time copies per volume, of which 64 are
reserved for Shadow Copies for Shared Folders if enabled on the
volume.
This service replaces the Persistent Storage Manager (PSM) in WP NAS
2.0.
Clustering
Provides application failover.
Windows Storage Server 2003 Enterprise Edition supports up to 8 nodes
(WP NAS 2.0 supports a maximum of 2 nodes).
Software RAID 0, 1, 5
RAID types provide differing levels of data protection and redundancy.
VDS also enables hardware based RAID.
Multipath I/O (MPIO)
Enables high performance and high availability through multiple paths to
storage.
System Monitoring
Monitors performance of the operating system. Allows system
administrator to assess I/O performance with different devices.
Watchdog Timer
Detects system hangs; can be programmed to reboot system after a
given time.
NAS Management Software
Depending on the complexity of the deployment scenario, the need for NAS management ranges
from the minimal (plug and play) to the considerably more complex (see Table 5).
Windows Storage Server 2003 provides a number of different interfaces to meet such management
needs, including both local and web-based UIs (see Table 7).
Table 7. Management Interfaces in Windows Storage Server 2003
Management
Additional Information
Web User Interface (UI)
Enables administrators to remotely manage users, create shares, and
control backups and similar tasks from any location on the network or
internet.
Remote Desktop
Enables remote control of other systems for administration.
