Arun Khan wrote: > On Tue, Oct 11, 2011 at 12:46 PM, John R Pierce <pierce at hogranch.com> > wrote: >> On 10/11/11 12:11 AM, Arun Khan wrote: >>> In rack mount chassis, do the cages that house the >>> hard disks have the following feature? <snip> > Does these bays have a connector (+ cable) that is connected to the > motherboard or RAID card to control the HDD LEDs in the bay? > (sorry if this appears basic but I have no experience with such hardware) They have sleds. You screw a std. drive into one, and shove it in - literally, that's all there is to it. > >>> (b) The failed HDD can be swapped. >> >> If they are in hotswap bays, yes. if they aren't, no. > > Are the hot swap bays compatible with Linux mdadm RAID? i.e. Upon > detection of disk failure, the respective HDD LED on the bay can be > turned ON? Everything understands hot swap bays these days, and certainly Linux, like every other version of Unix, does. Let's see, I have well over a hundred rackmounts in our server rooms and the data center, all have hot swap, and 90% are running CentOS (and a very few RHEL, and a couple of odd things, and there are the few WinDoze servers (they have hot swap, also). <snip> > The 2U system is for an appliance that I am building and it will be a > commercial product. I plan to order the "integrated" system from > "value add" SIs of Supremicro/Tyan (whover is able to satisfy the h/w > spec.). My storage requirement is 2TB (4X1TB disks), a 6 disk bay > should be sufficient (or whatever is the lowest denominator). You absolutely do *NOT* want anything but hot swap. Take a look at the Dell R[468]10's. <snip> mark