EMC easy leader in front of Symantec an IBM
 Worldwide purpose-built backup appliance (PBBA) factory revenues posted a 
 9.7% year-over-year increase, totaling $859.5 million in 4Q12, 
 according to the IDC Worldwide Quarterly Purpose-Built Backup Appliance 
 Tracker. 
However, the total PBBA open systems market posted 
 just under $567.5 million in revenues, representing 16.4% growth 
 from the prior year's fourth quarter. 
The total worldwide PBBA 
 capacity shipped reach 455,254 terabytes, growing 42.9% 
 year over year.
"The total worldwide PBBA market resumed robust 
 growth in the fourth quarter of 2012. Overall, the worldwide PBBA market 
 experienced strong growth in revenue, capacity, and shipments," said 
 Robert Amatruda, research director, data protection and recovery, IDC. "Long-term, 
 we expect the worldwide PBBA will continue to outpace the overall 
 data protection and recovery software and hardware market as 
 customers continue to embrace turnkey systems to alleviate their backup and 
 recovery challenges."
Total Worldwide PBBA 4Q12 Results
 EMC maintained its lead in the overall PBBA market with 66.5% revenue share 
 in the fourth quarter, followed by Symantec and IBM and with 11.8% and 8.4% 
 market share, respectively. Symantec exhibited strong year-over-year growth 
 in the PBBA market in the fourth quarter of 2012 while HP and IBM saw their 
 revenues decline.
Taxonomy Notes:
IDC defines a purpose-built backup 
appliance (PBBA) as a standalone disk-based solution that utilizes software, 
disk arrays, server engine(s), or nodes that are used for a target for backup 
data and specifically data coming from a backup application (e.g., NetWorker, 
NetBackup, TSM, and Backup Exec) or can be tightly integrated with the backup 
software to catalog, index, schedule, and perform data movement. The PBBA 
products are deployed in standalone configurations or as gateways. PBBA 
solutions deployed in a gateway configuration connect to and store backup data 
on general-purpose storage. Here, the gateway device is serving as the component 
that is purpose built solely for backup and not for supporting any other 
workload or application. Regardless of packaging (as an appliance or gateway), 
PBBAs can have multiple interfaces or protocols. Also, PBBAs often can provide 
and receive replication to or from remote sites and a secondary PBBA for the 
purpose of DR.