Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Product Name | Form Factor | Storage Medium | Max Usable Capacity (GB) | Speed ( IOPS ) | Latency (microseconds) | Bandwidth (GB/s) |
| --- | --- | --- | --- | --- | --- | --- |
| RamSan-440 | 4U rackmount | DRAM | 512.0 | 600000.0 | 15.0 | 4.5 |
| RamSan-630 | 3U rackmount | SLC Flash | 10000.0 | 1000000.0 | 80.0 | 10 |
| RamSan-70 | PCIe | SLC Flash | 900.0 | 1500000.0 | 30.0 | 2.5 |
| RamSan-710 | 1U rackmount | SLC Flash | 5000.0 | 400000.0 | 35.0 | 5 |
| RamSan-810 | 1U rackmount | eMLC Flash | 10000.0 | 400000.0 | 25.0 | 4 |
| RamSan-720 | 1U rackmount | SLC Flash | 12000.0 | 500000.0 | 25.0 | 5 |
Question:
List the number of ramsan-720 hard drives?
Answer:
1.0