Datasheet

IBM High IOPS SSD PCIe Adapters 4
Specifications
The IBM High IOPS SSD PCIe Adapters have the following specifications:
Storage capacity from 160 GB to 1.28 TB

Functions as a PCIe storage and controller device -- operating system sees a block device

PCI Express host interface as listed in Table 2

Note: These adapters cannot be used as bootable devices.
Table 2. PCI Express host interface specification
Description Part number PCIe interface
IBM 160GB High IOPS SS Class SSD PCIe Adapter 46M0877 PCIe 1.0a (Gen1) x4
IBM 320GB High IOPS MS Class SSD PCIe Adapter 46M0898 PCIe 1.0a (Gen1) x4
IBM 320GB High IOPS SD Class SSD PCIe Adapter 46M0878 PCIe 2.0 (Gen2) x8
320GB High IOPS SLC Adapter for IBM System x 81Y4535 PCIe 1.0a (Gen1) x4
640GB High IOPS MLC Adapter for IBM System x 81Y4531 PCIe 1.1 (Gen1) x4
640GB High IOPS MLC Duo Adapter for IBM System x 81Y4519 PCIe 2.0 (Gen2) x8
640GB High IOPS SLC Duo Adapter for IBM System x 81Y4539 PCIe 2.0 (Gen2) x8
1.28TB High IOPS MLC Duo Adapter for IBM System x 81Y4527 PCIe 2.0 (Gen2) x8
Comparison
Table 3 shows a comparison between the High IOPS SSD PCIe Adapters and solid-state drives.
Table 3. Comparison
High IOPS SSD PCIe Adapters Solid-state drive
Model 160
SLC
320
MLC
320
SLC
320
SLC
Duo
640
MLC
640
MLC
Duo
640
SLC
Duo
1.28
MLC
eXFlash
1.8” 50GB
MLC
(8 drives)
eXFlash
1.8” 200GB
MLC
(8 drives)
Part number
46M0877 46M0898 81Y4535 46M0878 81Y4531 81Y4519 81Y4539 81Y4527 43W7726 43W7746
Capacity 160 GB 320 GB 320 GB 320 GB 640 GB 640 GB 640 GB 1.28 TB 400 GB 1.6 TB
Max IOPS
4KB Read
129K 128K 189K 301K 129K 301K 358K 316K Non-RAID: 203K
RAID 5: 121K
Max IOPS
4KB Write
130K 108K 154K 110K 136K 109K 374K 277K Non-RAID: 140K
RAID 5: 22K
Max transfer
Read
754
MBps
735
MBps
787
MBps
1524
MBps
763
MBps
1703
MBps
1538
MBps
1511
MBps
Non-RAID: 2052 MBps
RAID 5: 1668 MBps
Max transfer
Write
635
MBps
476
MBps
769
MBps
1129
MBps
543
MBps
961
MBps
1047
MBps
818
MBps
Non-RAID: 1864 MBps
RAID 5: 1141 MBps