Ramsan Write Accelerator

Ключевые особенности:

•  Специальный продукт для Oracle
• Служит для ускорения работы (кеширования) Oracle redo logs, temporary tablespaces, и undo logs, а так же для других компонентов серверов баз данных
• Подключается напрямую к серверам и интегрируется с существующую структуру SAN 
• Распознается операционной системой как отдельный диск 
• Служит для кеширования записи и других задач, требующих повышенного быстродействия

I/Os Per Second

200,000

Capacity

16-32 GB

Bandwidth

1.5 GB per second

Latency

Less than 15 microseconds

Fibre Channel Connection

4-Gigabit Fibre Channel (2-Gigabit capable)

2 ports standard; up to 4 ports available

Supports point-to-point, arbitrated loop, and switched fabric topologies

Interoperable with Fibre Channel Host Bus Adaptors, switches, and operating systems

InfiniBand Connection

4x InfiniBand (10-Gigabit)

1 port standard; up to 2 ports available

Supports SRP upper level protocol

Interoperable with InfiniBand Host Channel Adaptors, switches, and operating systems

Management

Browser-enabled system monitoring, management, and configuration

Telnet management capability

Front panel displays system status and provides basic management functionality

LUN Support

1 to 1024 LUNs with variable capacity per LUN

Flexible assignment of LUNs to ports

Hardware LUN masking

Data Retention

Non-volatile solid state disk

Redundant internal batteries power the system for 25 minutes after power loss

Automatically backs up data to disk at 60 MB/sec

Reliability and Availability

Chipkill technology protects data against memory errors up to and including loss of an entire memory chip

Internal redundancies

   - Power supplies and fans

   - Backup battery power

   - Backup hard disk drives (mirrored)

Hot-swappable components

   - Two backup hard drives (front access)

   - Power supplies

Soft Error Scrubbing
   - When a single bit error occurs on a read, the RamSan will automatically re-write the data to memory thus scrubbing soft errors. Following the re-write the system re-reads to verify the data is corrected.

Backup Procedures

Supports two backup modes that are configurable per system or per LUN:

Data Sync mode - synchronizes data to redundant internal disk drives before shutdown or with power loss

Active Backup® mode (optional) - backs up data constantly to internal redundant disks without impacting system performance.

Size

5.25" (3U) X 16"

Power Consumption (peak)

250 Watts

Weight (maximum)

70 lbs