What is the price difference between the 9266 and the 9271 and what are the benefits?
Will look into the 840s - are there any specific benefits in terms of garbage collection - rather than just performance/
regardless 830 or 840 or any SSD for that matter, you just won't get TRIM support unless you want to give up hardware RAID. it's not a matter of choice! none of the hardware RAID cards on the market today can support TRIM which is also OS dependent. for linux, you will need to install experimental 2.6.33 kernel (even the latest RHEL6.3 production kernel is 2.6.32.xxx) just to get TRIM support if you connect SSD's to on-board Intel SATA controller (C202, C204, C602, C604) without going thru hardware RAID card.
the whole purpose of TRIM is to minimize write amplification, improve performance and endurance, so can the technique of over-provisioning (OP) which is entirely possible and darn easy to do with hardware RAID card. all you have to do is to leave some percentage out of full capacity as blank/unused raw space at the time you configure the array size. i.e. set array size to 410GB to a 4x 256GB SSD RAID-10 will give you about 20% over-provisioning and this 20% can improve endurance level as well as random write IOPS by 2-3 folds! http://cache-www.intel.com/cd/00/00/...354_492354.pdf
although white paper above is about Intel 320 SSD drives, but it can apply all SSD drives in general.
"$150" is the MSRP for 128GB Samsung 840 Pro. historically speaking, newegg has the tenancy to sell spanking-new-to-market products in MSRP. the settle-down street price shall be much lower than what newegg would sell or pre-book you for now.
Also, what RAID are people running? We're doing RAID 10 but have been considering going RAID 0 and having 2 SANs mirror each other for better throughput and real redundancy
If your running >4 drives I don't see any reason to not run raid6? More space efficient and unless you really need 100% of the iops of the SSD's the write whole (halving the iops) should not be a huge deal on SSD's. Actually even with only 4 drives I would seriously consider raid6 with SSD's.
Does LSI offer an option that supports TRIM? These are all SSD arrays using CacheCade as well...
if you run all SSD arrays, you don't really need CacheCade which is designed to boost performance from much slower spin drives by using single (or a pool of) ultra fast SSD as caching devices on BIOS level. what you need for pure SSD array is FastPath: http://www.lsi.com/products/storages...hSoftware.aspx
LSI claims that FastPath can boost LSI 2208 ROC based RAID card running all SSD arrays to 465000 IOPS!
anyway, the 9271-8iCC includes both CacheCade and FastPath in one packaging so that you don't have to buy the keys for CacheCade/FastPath separately.
It's strange, my order went through at provantage.com web site after i read for Australians they take either American Express or bank wire transfer payments. Then get 2 emails, first one says they can't accept my American Express payment and give me bank wire transfer info. Then 2nd email arrives a few minutes later and says they can't accept bank wire transfer and for me to send a money order as the only acceptable payment method
Guess my ip or something set off fraud alerts or something.
Coincidentally, the order was for LSI 9260-8i BBU and fastpath key. So ended up cancelling order and buying elsewhere.
My 9260-8i BBU seems to have died now, probably not worth investing in another when new LSI cards have cache vault.
I have a dual E5-2650 here with PCI-E 3.0 so that 9271-8i looks like just what I need to match up with my 256GB Samsung 830 and Plextor M5S SSDs (seem to perform better than Samsung 830 on C602 chipset)