NetApp is moving towards 12Gbps SAS or SAS-3 connectivity for disk shelves. DS224C shelves with IOM12 (12Gbps SAS) modules have been available for a while and now new generation controllers have onboard 12Gbps SAS ports as well separate 12Gbps capable SAS adapters.
Continue reading “Visio by DPTPB: ASIC failure with NetApp 12 Gbps SAS adapters and ports” →
Older generation SAS 6Gbps ports use QSFP form factor connector while newer generation SAS 12Gbps ports use smaller Mini-SAS HD form factor connector (at least with NetApp gear). These form factors are not compatible, i.e you cannot cable QSFP connector to Mini-SAS HD port or vice-versa.
To make things more confusing, there are also 12Gbps capable ports that are using QSFP form factor connector. In case of NetApp, X2069-R6 adapter is example of such combination.
Continue reading “Visio by DPTPB: Transitional SAS cables, QSFP to Mini-SAS HD” →