When considering a new storage solution, most users try to find the right balance between speed and capacity. SSDs are super fast, no doubt about it, but an HDD spinning at 7200RPM or 10,000RPM will still offer solid performance, and you have access to dramatically more storage capacity for a far lower cost per GB compared to an SSD.
Western Digital’s 4TB WD RE SATA drive
certainly satisfies the need for capacity. And at a 7200RPM spindle speed with a SATA 6Gbps interface,64MB of cache, and up to 171MBps sustained transfer rates, the performance balance is there as well. In the enterprise, though, there’s a third consideration that can trump the other two: reliability.