HP IO Accelerator ESXi/ESX user guide

Introduction 7
Performance attributes
IO Accelerator capacity
Models AJ878B and
BK836A
320GB 640GB
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
PCI-Express x4 PCI-Express Gen1 x4
IO Accelerator capacity
Models QK762A and
QK763A
785GB 1.2TB
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
PCI-Express Gen2 x4 PCI-Express Gen2 x4
*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