Read Write Cache And Disk Cache Policy Supported By The PERC Software RAID Controllers
| Read, Write, and Cache Policy | PERC S140 |
| Cache settings | Yes |
| Read Policy | Yes |
| Read Ahead (Enabled) | Yes |
| No Read Ahead (Disabled) | Yes |
| Write Policy | Yes |
| Write Back (Enabled) | Yes |
| Write Through (Disabled) | Yes |
| Force Write Back (Enabled Always) | No |
| Write Cache Enabled Protected | No |
| Cache Policy | No |
| Disk Cache Policy | No |
| Cache I/O | No |
| Direct I/O | No |