HP D2D4009fc HP StoreOnce Backup System Concepts and Configuration Guidelines - Page 7
Before you start, Overview, HP StoreOnce Backup system models
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1 Before you start Overview The HP StoreOnce Backup System is a disk-based storage appliance for backing up host network servers or PCs to target devices on the appliance. These devices are configured as Network-Attached Storage (NAS), StoreOnce Catalyst or Virtual Tape Library (VTL) targets for backup applications. The total number of backup target devices provided by an HP StoreOnce Backup System varies according to model. These devices may be all Storeonce Catalyst, all VTL, all NAS or any combination of Catalyst, NAS and VTL devices. All HP StoreOnce devices automatically make use of StoreOnce deduplication, ensuring efficient and cost-effective use of disk space. A further benefit of StoreOnce Catalyst devices is that deduplication may be configured to occur on the Media Server (low bandwidth) or on the StoreOnce Backup system (high bandwidth), allowing the user to decide which makes most efficient use of available bandwidth. HP StoreOnce Backup system models The information in this guide relates to all G3 HP StoreOnce Backup system models. (G3 means that the systems are running StoreOnce software version 3.x.x.) These products are also sometimes referred to as multi-node or single-node Backup systems, which relates to the hardware configuration. • The HP StoreOnce B6200 Backup system is the multi-node model and is composed of 1 to 4 couplets (the number depends on the customer-specific configuration). A couplet is a paired combination of two nodes (or servers) that are directly connected in failover pairs. Within a couplet each node has access to and can assume the role of both nodes in the event of node failure. A couplet provides a minimum of storage and this can be expanded in increments by adding pairs of 12-disk storage shelves up to a maximum of three pairs per couplet. • All other HP StoreOnce Backup systems are single-node models and are composed of a single server. Some models support expansion using 12-disk storage shelves. Table 1 StoreOnce B6200 models Product model HP StoreOnce B6200 Backup, EJ022A Description Ports Rack system with up to four couplets. Each couplet contains two nodes (servers) and two 12-disk RAID storage controllers 8 x 1GbE ports nl 4 x 10GbE ports nl 8 x FC ports Storage expansion Up to six 12-disk storage shelves per couplet (three per node) Table 2 StoreOnce 2700/ 4500, 4700 Product model Description Interfaces supported HP StoreOnce 2700 A single server with iSCSI only 8TB Backup , BB877A four 2TB hot-plug disks HP StoreOnce 4500 24TB Backup, BB878A A single server with twelve 2TB hot-plug disks iSCSI and FC Ports 4 x 1GbE ports 4 x 1GbE ports nl 2 x 10GbE ports nl 2 x FC ports Storage expansion Not supported One 12-disk expansion shelf, BB881A Overview 7