Hitachi manual Comparison of Lightning 9900 V Series models

Hitachi Data Systems

Table 1 – Comparison of Lightning 9900 V Series models.

Lightning 9900 V Series Product Offerings

The Lightning 9900 V Series offers two models – the Lightning 9980V™ and the Lightning 9970V™. The Lightning 9980V system is recommended for users requiring large storage capacities of 149TB+ of raw storage capacity. With the same advanced architecture as the Lightning 9980V system, the Lightning 9970V system bridges the gap between standard midrange and premium-priced advanced-function storage, with capacities up to 18TB+ of storage. The Lightning 9970V system is recommended for users who require advanced function capabilities of premium storage, yet do not need the actual storage capacity of the Lightning 9980V system. Table 1 compares key features of the two new Lightning 9900 V Series product offerings.

	Lightning 9900 V Series
Product Characteristics	Lightning 9980V	Lightning 9970V
	system	system
Number of Cabinets	2-5	1
Maximum Cache Capacity	64GB	32GB
Number of Fibre Channel Ports	Up to 64	Up to 48
1	Up to 48	Up to 24
Number of ESCON® Ports
Number of FICON™ Ports	Up to 32	Up to 24
Number of Disks (HDDs)	Up to 1024	Up to 128
Number of Array Groups	Up to 254	Up to 31
Number of ACP pairs	1-4	1-2
Number of FC-AL Paths to Back-end Disks	Up to 32	Up to 16
Maximum TB of Raw Disk Capacity	149TB+	18TB+
Minimum usable RAID-5 Capacity	73GB	73GB
Maximum usable RAID-5 Capacity	127.8TB	15TB

Figure 1 – The Lightning 9980V system provides for exploding growth and data hyper-consolidation while the Lightning 9970V system provides for managed growth and open systems exploitation.

Selecting the Lightning 9970V system or Lightning 9980V system depends on capacity requirements, performance requirements, and expected growth of data. The Lightning 9900 V Series therefore offers product alternatives that cover a very broad range of scalability, as illustrated in Figure 1.

2 1 With 2 ACP pairs maximum