Large HA SAN Build

Wed Jan 05, 2011 8:15 pm

It's OK to allocate 60%-80% of free physical RAM w/o risking to put machine into deep paging on random memory usage spikes. So I'd stick with say 60% and wait until V6 with dedicated cache manager will be released.

rchisholm wrote:We ran into a little trouble trying to get the 4GB cache modules for the 1880's so we're going to stick with the 1GB that came with each of them and add an extra 48GB of RAM to each of the StarWind nodes for 72GB each instead.

What's the maximum amount of system write cache that tends to be useful for an individual LUN?

rchisholm · Wed Jan 05, 2011 9:48 pm

Thanks, that's good info to have.

Any timeline on V6? we're still a few weeks to a month out from going live.

Wed Jan 05, 2011 10:06 pm

Go with the current stable version. For now V5.6 (about to be released), V5.7 (beta) and at least V5.7 (very early alpha, not all features are stabilized) are on the schedule before V6 (completely new core design) is going to be released even for first public beta.

rchisholm wrote:Thanks, that's good info to have.

Any timeline on V6? we're still a few weeks to a month out from going live.

rchisholm · Wed Jan 05, 2011 10:13 pm

Does V5.6 or V5.7 improve the HA write speed per LUN discussed earlier in this thread?

Constantin (staff) · Mon Jan 10, 2011 1:36 pm

I think it will be released in V6, while latest releases of 5.x will be aimed on extending functionality.