RAID card
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Why hardware RAID over software RAID?
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great question - was just about to ask the same thing.
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LSI (Broadcom) 9311-8i is very well for Raid 0, it is a host bus adapter. Use 9341-8i for other than Raid 0 options, but it has no cache. 9361-8i is better because it has 1 or 2 GB cache, but more expensive.
LSI cards do not use onboard cache with Raid 0 option as you know. But they are loosing their excitement nowadays. There started to appear 2 to 4 unit M.2 Raid on card adapters, without cables, much faster speed, much lower power consumption etc.
LSI cards do not use onboard cache with Raid 0 option as you know. But they are loosing their excitement nowadays. There started to appear 2 to 4 unit M.2 Raid on card adapters, without cables, much faster speed, much lower power consumption etc.
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Isn’t software RAID massively slower then hardware?
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It really depends on what layer and level you're doing it at and for what purpose. If we're talking about bulk storage, software RAID will ALWAYS be better in my mind, ALWAYS. If I'm trying to RAID0 or RAID1 two NVMe drives then there's several ways to RAID it and each one has an advantage and disadvantage.
Hardware RAID wise you can do it via motherboard (VROC for example) direct to CPU, chipset / LSI RAIDing, or addon card RAIDing. Hardware RAID might be faster here depending on the software overhead, where it's happening. Because you can also software RAID on several parts of the motherboard and on an addon card too.
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