Hewlett-Packard StorageWorks 12000 - Virtual Library System EVA Gateway Manual
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Model: HP 6000 - Officejet Wireless Color Inkjet Printer , HP StorageWorks 12000 - Virtual Library System EVA Gateway , HP StorageWorks 9000 Virtual Libr
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Figure 44 Virtual Drives across Multiple Nodes
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VLS Automatic Performance Load Balancing
The VLS always “thin provisions” its virtual cartridges and dynamically load balances all the incoming
new backup data across the available back-end arrays to ensure that there are never any performance
hotspots. When any virtual cartridge is written (in any virtual tape drive), it dynamically assigns which
array LUNs will store the cartridge data based on which array LUNs are least active. When you have
multiple virtual cartridges written concurrently, the load is always evenly balanced across the back-end
arrays and will always provide maximum performance regardless of which virtual cartridges are use
for backup.
HP StorageWorks VLS and D2D Solutions Guide 113