VTrak E-Class Product Manual - Promise Technology, Inc.

VTrak E-Class Product Manual
• Support for the industry standard Disk Data Format (DDF from SNIA)
ensures interoperability and drive roaming even among different RAID
vendors
• Compatible with leading SAS hard drives, host bus adapters and RAID
controllers
Subsystem and Controller Features
Controllers: Dual-controller configuration or single-controller configuration,
upgradeable to dual. Dual-controller subsystems feature Active/Active, Failover/
Failback.
Drive Support: Up to 16 (E610f/s) or 12 (E310f/s) 3.5" x 1" hard disk drives: SAS
3Gb/s, SATA II 3Gb/s and 1.5Gb/s. SATA drives require an AAMUX Adapter in
dual I/O module configuration (dual-controller) subsystems.
Supports any mix of SAS and SATA II 3Gb/s or 1.5Gb/s drives simultaneously in
the same system. Staggered physical drive spin-up.
External I/O Ports (per controller): Dual 4-Gb Fibre Channel host port; One
external 3 Gb/s SAS x4 ports for JBOD expansion (up to four VTrak JBOD
Systems).
Data Cache: Shared 512 MB predictive data cache (expandable to 2 GB);
Automatic write cache destaging; 72-hour battery backup (for 512 MB cache).
Command Queue Depth: 512 commands per VTrak system (up to 1024
commands with 512 MB memory).
Operational Features
RAID Levels: RAID 0, 1, 1E, 5, 6, 10, 50, and 60 – Any combination of these
RAID levels can exist at the same time.
Configurable RAID stripe size: 64 KB, 128 KB, 256 KB, 512 KB, and 1 MB stripe
size per logical drive.
Background task priority tuning: Adjustment of minimum I/O reserved for server
use during all background tasks.
Hot spares: Multiple global or dedicated hot-spare drives with revert option.
Maximum LUNs per subsystem: 256 in any combination of RAID levels.
Maximum LUNs per array: 32 logical drives (LUNs). Supports LUN carving by
allowing an array to be divided into multiple logical drives. Supports out-of-order
logical drive deletion and re-creation.
Max LUNs per Target ID: Up to 256, depending on host side driver and operating
system.
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