I need a cheap setup to store historic snapshots of a dataset in the 100-200GB range. These will see little use, but need to be kept online for some time (shared by Samba). The box housing the dataset is a Dell PowerEdge 750 with a PCI-X CERC 6-channel SATA controller. It has 4 SATA channels free.
I am considering the following setup. Your experience with similar solutions would be greatly appreciated.
I would add a 4-channel bracket in the free slot and connect these with ordinary SATA cables. I would then purchase a STARDOM 1U chassis or similar and use 4 ESATA cables to interconnect these to the bracket and use 4 ordinary 7200 rpm SATA disks in a RAID5 configuration using Linux software RAID because I want to be certain that I can read these disks when the PCI-X controller caves in.
Specifically, my questions are thus:
- Will the CERC accept disks this big in legacy (or whatever it calls disks that it does not RAID itself) mode?
- Does anyone have experience with the ST76104SU5 or similar rack-mountable disk chassis with separate power supply but no controller?
- Is it OK to go from SATA to ESATA like this, given that there is a somewhat stricter voltage requirement on ESATA?
- Is there any other way to produce ~3TB RAIDed rack-mounted disk for ~1000 USD?