What is a significant advantage of using the HPE StoreOnce Catalyst protocol over traditional Virtual Tape Library (VTL) targets in terms of data protection and management?
A.
Catalyst protects data by restricting data transfers to only Ethernet connections and NAS shares.
B.
Catalyst provides enhanced performance by enabling client-side deduplication.
C.
Catalyst eliminates the need for any form of encryption or API integration.
D.
Catalyst eliminates the need for any form of internal data management dashboard.
A Virtual Tape Library presents the StoreOnce appliance to the backup server as a tape library. This preserves compatibility with legacy tape-oriented workflows, but the appliance remains a passive target. The backup server sends the full data stream across the network, and deduplication takes place only at the appliance after the data has arrived.
HPE StoreOnce Catalyst changes where deduplication can happen. The Catalyst client, integrated with the backup application, performs deduplication at the source, either on the backup server or on the protected client. Only unique data is transmitted to the appliance. This reduces network traffic, shortens backup windows and eases the load on the target, and it delivers a significant performance improvement, particularly across constrained links.
Option A is incorrect because Catalyst is not restricted to Ethernet and NAS shares; it is a distinct protocol that coexists with the other presentation methods. Option C is incorrect because Catalyst supports encryption and is based on an API integration with backup software. Option D is incorrect because management dashboards remain available. Option B correctly identifies client-side deduplication as the performance advantage over VTL.
Study Guide reference: HPE Storage Fundamentals (HPE0-J81), HPE StoreOnce; Catalyst versus VTL and NAS presentations, source-side deduplication.
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