IBM 9123710 - eServer OpenPower 710 Introduction Manual Download

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Chapter 2. Architecture and technical overview

2.7 External disk subsystem

The OpenPower 710 server has internal hot-swappable drives. Specific client requirements
can be satisfied with the several external disks possibilities that the OpenPower 710 server
supports.

IBM 2104 Expandable Storage Plus

The IBM 2104 Expandable Storage Plus Model DS4 is a low-cost 3U disk subsystem that
supports up to 14 Ultra320 SCSI disks from 36.4 GB up to 300 GB, at the time this publication
was written. This subsystem can be used in splitbus mode, meaning the bus with 14 disks
could be split into two buses with seven disks each. In this configuration, one additional LPAR
(using dedicated devices) could be provided with up to seven disks for rootvg by using one
Ultra3 SCSI adapter (FC 1974) or one Ultra3 SCSI RAID adapter (FC 1975).

For further information about the IBM 2104 Expandable Storage Plus subsystem, visit:

http://www.ibm.com/servers/storage/disk/expplus/index.html

IBM TotalStorage Storage servers

The IBM TotalStorage DS4000 Storage server family consists of five models: Model DS4100,
DS4300, DS4400, and DS4500. The Model DS4100 is the smallest model, which scales up to
28 TB; and Model DS4500 is the largest, which scales up to 32 TB of disk storage at the time
this publication was written. Model DS4300 provides up to 16 bootable partitions that are
attached with the Gigabit Fibre Channel adapter (FC 1977). Model DS4400 provides up to 64
bootable partitions. In most cases, both the TotalStorage DS family and the OpenPower 710
server are connected to a storage area network (SAN). If only space for the rootvg is needed,
the Model DS4100 is a good solution.

For support of additional features and for further information about the IBM TotalStorage
DS4000 Storage Server family, refer to the following Web site:

http://www.ibm.com/servers/storage/disk/ds4000/index.html

IBM TotalStorage Enterprise Storage Server®

The IBM TotalStorage Enterprise Storage Server (ESS) Models DS6000 and DS8000 are the
high-end premier storage solution for use in storage area networks. The TotalStorage
DS6000 provides Enterprise class capabilities in a space-efficient modular package. It scales
to 67.2 TB of physical storage capacity by adding storage expansion enclosures. The Model
DS8000 series is the flagship of the TotalStorage DS family. The DS8000 scales to 192 TB;
however, the system architecture is designed to scale to over one petabyte. The Model
DS6000 and DS8000 systems can also be used to provide disk space for booting LPARs or
partitions using Micro-Partitioning technology. ESS is usually connected to a SAN, to which
the OpenPower 710 server is also connected by using Gigabit Fibre Channel adapters (FC
1977).

For further information about ESS, refer to the following Web site:

http://www.ibm.com/servers/storage/disk/enterprise/ds_family.html

Note: External I/O drawers 7311-D11 and 7311-D20 are not supported on the
OpenPower 710 server.