IBM 5903 PCIe 380MB Cache Dual - x4 3Gb SAS RAID Adapter

• 380MB Cache

IBM 5903 PCIe 380 MB Cache Dual - x4 3 Gb SAS RAID Adapter is a short, full high form factor adapter that supports the attachment of SAS disk and SAS solid state drives (SSD) using a pair of mini SAS 4x connectors. Write cache can provide an I/O performance boost even if RAID 5/6/10 is not used. From a high-level perspective, except for having a larger write cache, it is very similar to the feature 5902 PCI-X SAS adapter and provides a high-performance connection to SAS devices. Two of feature 5903 provides for mirrored write cache data and mirrored RAID parity footprints between the adapters for superior availability. Feature 5903 is installed in pairs, allowing for redundancy of the write cache. If the feature 5903 pairing is broken, then write cache is disabled. The #5903 can also be paired with a #5805 adapter. Feature 5903 supports SAS disk drives (HDD) and SAS-bay-based SSD located in a PCIe 12X I/O Drawer or drives located in an EXP12S Disk Drawer or EXP24S Disk Drawer. AIX/Linux formatted SAS drives can be attached, and RAID 0, RAID 5, RAID 6, and RAID 10 are supported. Similarly, IBM i RAID formatted HDD and SSD can also also be attached, and RAID 5 and RAID 6 is support. AIX, IBM i and Linux also support The #5805 is electronically identical to the #5903 and both the 5903 and 5805 use CCIN number is 574E. The #5805 adapter is slightly more narrow than the #5903 due to the placement of its cache batteries.