Oracle has announced the Oracle Exadata Storage Expansion Rack, a cost-effective way to add extreme performance storage servers to an Oracle Exadata Database Machine.

The Oracle Exadata Storage Expansion Rack is ideal for storing massive amounts of structured and unstructured data, including historical relational data, backups of Oracle Exadata Database Machine, Weblogs, documents, images, LOBs and XML files.
Standard Oracle Exadata Storage Expansion Rack configurations come with 96Tb to more than three petabytes of raw disk storage using only the included InfiniBand switches. More than 10 petabytes of user data can be stored using the Exadata Hybrid Columnar Compression which is included. Also included are the Flash PCI Card Capacity ranges from 1.5Tb to 47Tb.
The Intel Xeon CPU processing power in the Oracle Exadata Storage Servers range from 48 CPU Cores to more than 1500 CPU Cores.
The Oracle Exadata Storage Expansion Rack has complete redundancy built in to support the demands of critical applications including redundant 40Gbps InfiniBand connectivity. Each server also features hot-swappable disks, power supplies and fans for high availability.
The Oracle Exadata Storage Expansion Rack supports the full range of unique Oracle Exadata Storage Software features, including:
* Oracle Exadata Hybrid Columnar Compression that typically provides 10x compression.
* Oracle Exadata Smart Scan that runs database queries directly in storage.
* Oracle Exadata Storage Indexes.
* Oracle Exadata Data Mining Offload.
* Oracle Exadata Backup Acceleration.
* Oracle Exadata I/O Resource Manager prioritisation by database user or job.
Automatic storage management (ASM) dynamically and automatically balances the data across Oracle Exadata Storage Servers, evenly balancing the I/O load across the racks to fully utilise all available hardware.
ASM also provides disk mirroring (normal or triple mirrored) to protect against disk failures, loss of data and safeguard data accessibility.
The Oracle Exadata Storage Expansion Rack comes in three configurations:
* Full Rack with 18 Oracle Exadata Storage Servers, delivering up to 6.75Tb of Oracle Exadata Smart Flash Cache, 432Tb of raw disk storage, and 216 CPU Cores for SQL processing in storage.
* Half Rack with 9 Oracle Exadata Storage Servers, delivering 3.4Tb of Oracle Exadata Smart Flash Cache, 216Tb of raw disk storage, and 108 CPU Cores for SQL processing in storage.
* Quarter Rack with 4 Oracle Exadata Storage Servers delivering 1.5Tb of Oracle Exadata Smart Flash Cache, 96Tb of raw disk storage, and 48 CPU Cores for SQL processing in storage.
All three versions of the Oracle Exadata Storage Expansion Rack are delivered with the same 2Tb High Capacity SAS disks and Oracle Exadata Smart Flash Cache available in the Oracle Exadata Database Machine.
Up to eight Oracle Exadata Database Machine racks and Oracle Exadata Storage Expansion Racks can be simply connected via InfiniBand cables to achieve single storage grid with a raw disk capacity of 3,3 petabytes. Larger configurations can be built with additional switches.
“Organisations today are continually challenged with managing and storing the explosive growth in both structured and unstructured data,” says Andrew Mendelsohn, senior VP, Database Server Technologies, Oracle.
“By combining leading, industry-standard servers and storage hardware from Sun with the intelligence built into Oracle software, the Oracle Exadata Database Machine and Oracle Exadata Storage Expansion Rack allow customers to achieve unmatched data scalability, capacity and reliability.”