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Product Characteristics 9960 9910
Number of Cabinets 2-7 1
Maximum Cache Capacity 32 GB 16 GB
Number of Fibre Channel/ESCON
®
Ports Up to 32 Up to 24
Number of FICON Ports Up to 16 Up to 12
Number of Disks (HDDs) Up to 512 Up to 48
Number of Array Groups Up to 126 Up to 11
Number of ACP pairs 1-4 1
Number of FC-AL Paths to Back-end Disks Up to 32 Up to 8
Maximum TB of Raw Disk Capacity 88 TB+ 8 TB+
Minimum usable RAID-5 Capacity 54 GB 54 GB
Maximum usable RAID-5 Capacity 66.2 TB 6.2 TB
Selecting the 9910 or the 9960 is dependent on capacity requirements and expected
growth of data. The Lightning 9900
™
Series therefore offers product alternatives that cover
a very broad range of scalability as illustrated in Figure 1.
An Overview of the Hitachi Lightning 9900
™
Series Architecture
The Lightning 9900
™
Series intelligent storage array is the most powerful enterprise
storage system in the industry today. The new architecture used in the Lightning 9900
™
Series is specifically designed for the brutal I/O demands of open systems environments.
Extremely high internal bandwidths, high-speed back-end design, scalable internal
pathways, increased processor speeds, and increased number of processors, larger cache sizes,
and a new and improved high-performance RAID-1 (called RAID-1+) sets the Lightning
9900
™
Series apart from all other storage systems. Figure 2 illustrates the architecture of the
Lightning 9900
™
Series.
Table 1 – Comparison of
the Lightning 9900
™
Series models.
Figure 1 – The 9960
provides for exploding
growth and data
consolidation while the
9910 provides for
managed growth and
open system exploitation.
The most powerful
storage system in the
world.
Hitachi Data Systems
2