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Using SAS SSD drives on a server is a bad idea for many reasons. One should use PCIe cards, that sit directly on the PCIe bus, such as FusionIO or SanDisk. They
by cft 11y ago
Using SAS SSD drives on a server is a bad idea for many reasons. One should use PCIe cards, that sit directly on the PCIe bus, such as FusionIO or SanDisk. They have been tested and retested (e.g. by Facebook), without the unnecessarily added complexity of SAS/SATA protocols. The I/O performance is also about 20x.
- adamsurak 11y agoI completely agree and we are going this direction.
- baruch 11y agoI don't think that testing by Facebook is going to help you unless you are using the exact same model as they are and are assured of using their exact firmware. At work we use SAS SSDs in large quantities and the firmware we use is customized to us (based on the mainline one). Do not assume that a bug that was fixed in our firmware was necessarily fixed in the normal one. One would think it would but it is possible that it wasn't ported to the mainline firmware.