It's a good card, just no write cache because no BU option. However they work fine and perform well. You can probably get a rocketraid card, but i definitely have mixed feelings for those. Up your budget a little more and you can grab a 3ware card.
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You *can* enable write cache on the 2405, it's just risky as you can't use a BBU, but it's possible to enable. [not that I'd recommend this but if you wanted performance on a budget and had good backups this is an option]