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
