
Performance attributes
| IO Accelerator capacity | 320GB | 640GB | 
| Models AJ878B and | 
 | 
 | 
| BK836A | 
 | 
 | 
| 
 | 
 | 
 | 
| NAND type | MLC (Multi Level Cell) | MLC (Multi Level Cell) | 
| Read Bandwidth (64kB) | 735 MB/s | 750 MB/s | 
| Write Bandwidth (64kB) | 510 MB/s | 550 MB/s | 
| Read IOPS (512 Byte) | 100,000 | 93,000 | 
| Write IOPS (512 Byte) | 141,000 | 145,000 | 
| Mixed IOPS* (75/25 r/w) | 67,000 | 74,000 | 
| Access Latency (512 Byte) | 30 µs | 30 µs | 
| Bus Interface | 
| IO Accelerator capacity | 785GB | 1.2TB | 
| Models QK762A and | 
 | 
 | 
| QK763A | 
 | 
 | 
| 
 | 
 | 
 | 
| NAND type | MLC (Multi Level Cell) | MLC (Multi Level Cell) | 
| Read Bandwidth (1MB) | 1.5 GB/s | 1.5 GB/s | 
| Write Bandwidth (1MB) | 1.1 GB/s | 1.3 GB/s | 
| Read IOPS (Seq. 512 Byte) | 443,000 | 443,000 | 
| Write IOPS (Seq. 512 Byte) | 530,000 | 530,000 | 
| 
 | 
 | 
 | 
| Read IOPS (Rand. 512 Byte) | 141,000 | 143,000 | 
| Write IOPS (Rand. 512 Byte) | 475,000 | 475,000 | 
| Read Access Latency | 68µs | 68µs | 
| Write Access Latency | 15µs | 15µs | 
| Bus Interface | 
*Performance achieved using multiprocessor enterprise server
•Enterprise data integrity
•Field upgradeability
•Green footprint, 7.5W nominal per device
NOTE: MSI was disabled to obtain these statistics.
Required operating environment
The HP IO Accelerator is supported for use in the following operating environments:
•VMware ESX 4.0
•VMware ESX 4.1
•VMware ESXi 4.1
Introduction 7
