I'm sure I read somewhere that the H310 natively was set to 25 with Dell firmware, but was capable of a queue depth of something like 600 when running the LSI firmware? Maybe I'm wrong...question for you guys who know better, is the H310 flashed to IT mode work just as well as an LSI 9211-8i? I read on some FreeNAS forum that the H310 was sort of crippled in that its command queue depth is very shallow versus other HBAs. I was thinking of using a few H310 in IT mode for a ZFS storage server, but wondering if that's not the best choice here relative to getting another LSI 9211-8i based card?
In ESXi I think you can ssh in and run esxtop, d then f to bring up QSTATS and look down the AQLEN column for your adapterI seem to recall reading that flashing them restores the full queue depth. If you know a Linux command to test that, I'd be willing to try it.
is that based on experience or a guess?I see no reason why not, assuming that the rest of your hardware is capable of dealing with the data
Experience with a slower configuration (RAIDZ1 of 5 * 8TB) on a 9201-16i. Those systems replicated over the LAN and got about 700MB/sec. Given that the graph shows a transfer of some 16TB, this is purely disk-limited as there's no way to cache all those writes on a SSD - eventually things will "bog down" as the SSD fills and is flushed to spinning rust. The downward trend is due to slower data transfers as you move toward the middle of the drives from the outside.is that based on experience or a guess?