Chapter 1: Introduction to VTrak
7
LUN Masking and Mapping: Supports multiple hosts.
Disk Data Formats: Supports Disk Data Format (DDF) for industry-wide
standardization and drive roaming between VTrak systems.
Background Activities: Media Patrol, background synchronizing, disk array
rebuild, Redundancy Check, SMART condition pooling, Online Capacity
Expansion (OCE), RAID Level Migration (RLM). Includes priority control, rate
control, and watermarking per BGA in disk and NVRAM.
Foreground Activities: Disk array initialization.
Physical Drive Error Recovery: Predictive Data Migration (PDM), replaces un-
healthy disk member in array, while maintaining normal array status during the
data transition. Bad Sector Mapping, Media Patrol, SMART, Hard/Soft Reset to
recover HD from bad status, HD Power-control to recover HD from hung status.
Array Error Recovery: Data recovery from bad sector or failed HD for redundant
RAID, RAID 5/6 inconsistent data Prevent (Write Hole Table), Data content Error
Prevent (Read/Write Check Table) NVRAM event logging.
SCSI Commands: Supports extensive SCSI command set equivalent to SCSI/FC
hard disk drives. Variable sector size (512 byte to 4 KB) to break OS 2TB
limitation. 16 byte CDB support for 64-bit LBA addressing.
Management
Supported Operating Systems: Windows 2000 Server, Windows 2003 Server,
Linux (Red Hat, SuSE), Macintosh OS X, Solaris.
Management Tools: WebPAM PROe via out-of-band Ethernet. OS independent,
localized in multiple languages, SSL Security support. Command Line Interface
(CLI) and Command Line Utility (CLU) via RJ-11 Serial Port or Telnet.
Standard Management Protocols: SNMP, WBEM/CIM
RAID Creation: Automatic, Express, and Advanced configuration support for
novice to skilled users.
Management Interfaces: WebPAM PROe, CLU, CLI, audible (buzzer) and visible
(LEDs) alarms.
Management Protocols: Embedded web server and management support—no
host agent needed. Ethernet, RJ-11 serial port, SNMP, SSL, Telnet, Email.
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