Xiotech—Proprietary
160337-000 Rev D, 30 September, 2013
Page 3
Introduction
ISE User Guide
Introduction
The ISE is a high-density, fully redundant, rack-mountable storage device that integrates enterprise-class
drives with advanced array controllers and environmental support components to provide an extremely reliable
self-contained storage unit that outperforms more traditional storage sub-systems.
As a fully redundant unit, the ISE consists of pairs of active components; each member of the pair can function
in the absence of the other member, maintaining operation in the event of failure of an active component. If a
component fails, the system supplies information designed to assist in completing corrective actions. The ISE
can continue to operate with multiple component failures while making intelligent decisions to provide the
highest level of data protection and integrity.
Advanced Features
The ISE provides the following advanced features:
a.
Managed Reliability
: The ISE contains processes that improve system reliability through intelligent error
management. These processes include:
•
A hierarchy of table-driven recovery actions that repair drive errors ranging from simple errors to those
requiring more advanced error handling. This feature provides no-touch drive maintenance and
virtually eliminates removal of entire drives from service.
•
In-place drive remanufacture that predicts, diagnoses, and repairs drive degeneration and failures
using algorithms and commands previously available only to the drive manufacturer.
•
A closed-loop feedback system between the installation and the manufacturer that collects and
analyzes a variety of system operating metrics. This feature greatly reduces failures by remotely
predicting and diagnosing potential problems and providing proactive system servicing.
•
Hybrid DataPacs, combining solid state drives and hard drives.
b.
High-performance data I/O
: The system architecture leverages the power of a single processor with mul-
tiple cores and SSDs (Hyper ISE) to deliver outstanding data I/O performance.
c.
Dual controllers
: Both controllers actively participate in data I/O, simultaneously accessing all drives in
the system. This configuration provides maximum performance as well as reliability.
d.
Outstanding data integrity protection
: The system implements the following data integrity features:
•
ISE RAID 10 (similar to industry RAID 1) provides data integrity protection using algorithms that deliver
efficient function with minimal overhead.
•
Data Integrity Field (DIF) implementation provides additional data integrity protection.
e.
Automatic failover/failback
: The system performs automatic transfer of volume access from an out-of-
service controller to the partner in conjunction with appropriate multi-path drivers at the host level.
f.
Run-time controller and drive firmware upgrades
: The system provides the ability to upgrade the inter-
nal controller firmware, drive firmware, and servo code with new versions without service interruption.
Should a controller experience an unrecoverable error during the firmware upgrade process, controller
firmware is returned to the previously installed version.
Summary of Contents for ISE-2 Series
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