January 21, 201115 yr Are you guys all using HBA's with 8 ports? Like the SUPERMICRO AOC-SASLP-MV8. Why not using a card with more ports? Like the LSI SAS 9201-16i. No driver support or..?
January 21, 201115 yr It does look to be an interesting product (NewEgg Internal Info $400) (Provantage External Info $500). It uses the mpt2sas drivers under Linux (source). The next 5.0 beta 3 revision of unRAID is said to include the mpt2sas drivers, however I don't know if it'll include native support for detecting the drives. It might work if it includes SK's SCSI-based drive detection patches. For the price, if your motherboard already supports 2 cards, two 8 port cards are more cost efficient.
January 21, 201115 yr Author If you want to use a motherboard with only one expansion port this HBA card could be interesting if it is supported by Limetech. I'm think of the Supermicro X7SPA boards. Using one HBA card maybe saves also some energy. For the price, if your motherboard already supports 2 cards, two 8 port cards are more cost efficient. True. Maybe there are similar HBA cards out there which cost less. Something to investigate.
January 21, 201115 yr Interesting i thought... until i realized its 4 times the prices of a AOC-SASLP-MV8
January 21, 201115 yr Also according to newegg card is PCIe x8 card. The X7SPA has a PCIe x4 slot in a x16 connector for the 4 X7SPAs I can find on newegg. But maybe that will only slow it down?
January 21, 201115 yr How do those cards work? I have an adaptec card that just has 4 SATA ports on it, but if I wanted to jump to more I may as well get one of those. Is it as simple as buying that + the breakout cable? Because holy shit if so. is there any performance degradation compared to using a card with the independent ports?
January 22, 201115 yr For that sort of money look at a SAS expander either a chenbro Chenbro CK12803 or preferably a HP 468406-B21. The HP one seems more compatible with ontrollers. The HP defo works with the weapon of choice for most serious unraiders...Supermicro AOC-SASLP-MV8. Whether unRAID likes it is a different matter. It should work...
January 28, 201412 yr Any more info on the HP 468406-B21 SAS expander? It looks very good for a DAS chassis as it directly has an external SFF 8088 port. It can be mounted to the case through a PE-2SD1-R10-1 PICMG 1U Backplane with PCIe Slot and then connected to power through a Supermicro CSE-PTJBOD-CB1 JBOD Power Board. More infos on the PICMG here http://www.servethehome.com/sas-expanders-build-jbod-das-enclosure-save-iteration-2/ Supermicro CSE-PTJBOD-CB1 JBOD Power Board http://www.servethehome.com/supermicro-cse-ptjbod-cb1-jbod-power-board-diy-jbod-chassis-made-easy/
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