for managing storage units by complementing the use of the IBM TotalStorage DS
Storage Manager web-based interface and the DS command-line interface.
You must implement the DS Open API through the IBM TotalStorage Common
Information Model (CIM) agent, a middleware application that provides a
CIM-compliant interface. The DS Open API uses the CIM technology to manage
proprietary devices as open system devices through storage management
applications. The DS Open API allows these storage management applications to
communicate with a storage unit.
DS8000 hardware specifics
The DS8000 models offer a high degree of availability and performance through the
use of redundant components that can be replaced while the system is operating.
You can use the DS8000 models with a mix of different operating systems and
clustered and nonclustered variants of the same operating systems.
Contributing to the high degree of availability and reliability are the structure of the
DS8000 storage unit, the host systems it supports, and its processor memory and
processor speeds.
Storage unit structure
The design of the storage unit, which contains the base model and the expansion
models, contributes to the high degree of availability that is associated with the
DS8000. The primary components that support high availability within the storage
unit are the storage server, the processor complex, and the rack power control card.
The storage unit also has redundant fibre switches, with fibre fabric connections to
both processor complexes. The entire power system at all levels is fully redundant.
There are redundant private LAN networks between each storage unit and the
management consoles (even if there is only one management console).
Storage unit
A storage unit consists of a storage server and two or more storage (disk)
enclosures that are packaged in one or more racks with associated power
supplies, batteries, and cooling.
Storage server
A storage server consists of two processor complexes, two or more I/O
enclosures, and a pair of rack power control cards.
Processor complex
A processor complex controls and manages the storage unit to perform the
function of the storage server. The two processor complexes form a
redundant pair such that if either processor complex fails, the remaining
processor complex performs all storage server functions.
Rack power control card
A redundant pair of rack power control (RPC) cards coordinate the power
management within the storage unit. The RPC cards are attached to the
service processors in each processor complex, the primary power supplies
in each rack, and indirectly to the fan/sense cards and storage enclosures
in each rack.
Multi-path subsystem device driver
The IBM TotalStorage Multi-path subsystem device driver (SDD) provides
load balancing and enhanced data availability capability in configurations
with more than one I/O path between the host server and the DS8000
10 DS8000 User’s Guide
To Next Page
Loading...
Need help?
General