Specifications

Escala Tower PL & S, E, T System Hardware
Chapter 3: External Storage and SAN Subsystems 30/116
9es3s1c3.doc
Rev 5.9
02/12/2003
2.3.3. SAN Features
One or multiple servers can be connected to a DAS5300, using the connectors of the SP (2 connector
per SP). External hubs or switches can be used to increase the connectivity. MIA can be plugged on
the DAS connectors to enable longer distances with multimode optical fibers, or to connect to devices
with native optical interfaces. Several DAS5300 can be connected to a single HBA on a server using
external hubs or switches.
2.4. DAS4500
Discontinued as of: 31/12/2002.
2.4.1. Highlights
The DAS4500 is the high-end model of the DAS product line. It is a highly flexible disk subsystem,
with high performance levels, up to 60 disk slots and 18 / 36 / 72 GB disks. Higher capacities (up to
100 disks) can be proposed in SFR.
The DAS4500 is based on DPE and DAE enclosures. The Fibre Channel technology used for host
connection brings optimal cabling flexibility, and high transfer rates. The Storage Processors of the
DAS4500 perform extremely well for both I/O intensive and bandwidth hungry applications.
Delivering 30,000 I/Os and 175 MB/s with two Storage Processors, the DAS4500 is the ideal solution
for a wide range of applications. From OLTP and Web servers to data warehouses and graphics-
intensive environments, the DAS4500 delivers information fast.
The DAS4500 offers an excellent data protection solution for use with standalone servers, or as a
storage system shared between multiple AIX servers and/or cluster nodes, but also between NT and
other UNIX variants (using Access Logix). It is well suited for environments requiring high volumes
of storage, and high I/O performance.
The DAS 4500 can be shared by AIX and NT servers using ASM (AIX SAN Manager) or [e-mail]!.
Support of mix of AIX with other operating systems requires Access Logix.
The basic package contains 1 SP and a single power supply. It can be upgraded with optional hardware
components to provide a fully redundant disk subsystem. Several packaging and capacity options
allow to build the most suited configuration, while preserving the evolutivity up to 100 disks.