8 DS8000 Series: Concepts and Architecture
workloads, and with different operating environments, within a single physical DS8000
storage subsystem. The LPAR functionality is available in the DS8300 Model 9A2.
The first application of the pSeries Virtualization Engine technology in the DS8000 will
partition the subsystem into two virtual storage system images. The processors, memory,
adapters, and disk drives are split between the images. There is a robust isolation between
the two images via hardware and the POWER5 Hypervisor™ firmware.
Initially each storage system LPAR has access to:
50 percent of the processors
50 percent of the processor memory
Up to 16 host adapters
Up to 320 disk drives (up to 96 TB of capacity)
With these separate resources, each storage system LPAR can run the same or different
versions of microcode, and can be used for completely separate production, test, or other
unique storage environments within this single physical system. This may enable storage
consolidations, where separate storage subsystems were previously required, helping to
increase management efficiency and cost effectiveness.
A detailed description of the LPAR implementation in the DS8000 series is in Chapter 3,
“Storage system LPARs (Logical partitions)” on page 43.
1.2.4 Supported environments
The DS8000 series offers connectivity support across a broad range of server environments,
including IBM eServer zSeries, pSeries, eServer p5, iSeries, eServer i5, and xSeries®
servers, servers from Sun and Hewlett-Packard, and non-IBM Intel®-based servers. The
operating system support for the DS8000 series is almost the same as for the previous ESS
Model 800; there are over 90 supported platforms. This rich support of heterogeneous
environments and attachments, along with the flexibility to easily partition the DS8000 series
storage capacity among the attached environments, can help support storage consolidation
requirements and dynamic, changing environments.
1.2.5 Resiliency Family for Business Continuity
Business Continuity means that business processes and business-critical applications need
to be available at all times and so it is very important to have a storage environment that
offers resiliency across both planned and unplanned outages.
The DS8000 supports a rich set of Copy Service functions and management tools that can be
used to build solutions to help meet business continuance requirements. These include IBM
TotalStorage Resiliency Family Point-in-Time Copy and Remote Mirror and Copy solutions
that are currently supported by the Enterprise Storage Server.
You can manage Copy Services functions through the DS Command-Line Interface (CLI)
called the IBM TotalStorage DS CLI and the Web-based interface called the IBM
TotalStorage DS Storage Manager. The DS Storage Manager allows you to set up and
manage data copy features from anywhere that network access is available.
Note: Remote Mirror and Copy was referred to as Peer-to-Peer Remote Copy (PPRC) in
earlier documentation for the IBM TotalStorage Enterprise Storage Server.
