= LSI cards = [[BR]][[BR]] = Vendor information = LSI (http://www.lsi.com/) is probably the most used hardware raid manufacturer.[[BR]] Many LSI cards are rebranded by OEM. In example, nearly all current Dell servers have LSI cards re-branded as Dell PERC. [[BR]] = Tones of different cards = LSI sells several model of cards which do not use the same drivers nor the same tools. Here are what we know yet: * LSI FusionMPT: This is the cheaper card which is usually found in two-drive-bays-only servers.[[BR]] It only supports RAID0 and RAID1. See: [wiki:LSIFusionMPT] for informations about this card. * LSI MegaRAID: This is the old high-end cards from LSI.[[BR]] It is fully hardware RAIDs controllers supporting RAID5, at least, with various SCSI interfaces.[[BR]] Deprecated, but still found in many old servers. See: [wiki:LSIMegaRAID] for informations about this card. * LSI MegaRAID SAS: This is current high-end series from SCSI.[[BR]] It use SAS or SATA connectors and can be found in many OEMs servers like Dell's. See: [wiki:LSIMegaRAIDSAS] for informations about this card. * LSI MegaRAID SAS (megasr crap): This is the first of the broken cards by LSI. I hope you don't have one.[[BR]] In fact this card has FusionMPT hardware plus MegaRAID BIOS. RAID5 is supported through a proprietary kernel module. Both FusionMPT and this fake MegaRAID looks like this in lspci:[[BR]] ''0d:05.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068 PCI-X Fusion-MPT SAS (rev 01)'' But if you run lspci -nn you will notice this:[[BR]] Real FusionMPT: ''02:08.0 SCSI storage controller [0100]: LSI Logic / Symbios Logic SAS1068 PCI-X Fusion-MPT SAS ![1000:0054] (rev 01)''[[BR]] Fake MegaRAID : ''0d:05.0 SCSI storage controller [0100]: LSI Logic / Symbios Logic SAS1068 PCI-X Fusion-MPT SAS ![1000:0055] (rev 01)''[[BR]] 1000:0054 is okay, 1000:0055 is a fake MegaRAID card. Some users reported a switch available on the motherboard to disable software RAID5 and use the card as a regular FusionMPT card. However I can't find it on a '''Nec 120Rg-1''' so I had to deal with that crap.