HP StorageWorks 6000 HP StorageWorks VLS and D2D Solutions Guide (AG306-96028, - Page 111

Number of VLS12000 EVA Gateway Nodes with 2:1 compressible data or deduplication disabled 5 1200 MB/s 1800 MB/s 2400 MB/s 3000 MB/s 3600 MB/s 4000 MB/s 4000 MB/s 6 1200 MB/s 1800 MB/s 2400 MB/s 3000 MB/s 3600 MB/s 4200 MB/s 4800 MB/s How it Works VLS Scalability The VLS9000 and VLS12000 models have a multi-node "grid-like" architecture that provides the ability to scale both performance and capacity of the virtual library while still presenting it as a single backup target to the backup application. This means that all the backup jobs can be configured to use the same shared backup target which dramatically improves the amount of day-to-day administration required to run the backups, which is one of the main advantages of a consolidating to an enterprise-class scalable backup device. This is significantly better than having to divide up the backup solution into multiple smaller lower performance backup targets because this would require manual administration of which backups use which target, and as backups grow this also means switching backups from one target to another as each target starts to run out of performance or capacity. (This is similar to using one enterprise tape library such as an ESL-E compared to using multiple autoloaders.) The VLS nodes present the virtual library with its virtual tape drives and the virtual cartridges are stored on the back-end array LUNs. The internal architecture of the VLS has every VLS node connected (via dual paths) to every back-end array LUN as shown in Figure 43: HP StorageWorks VLS and D2D Solutions Guide 111