> On Jan 31, 2016, at 2:59 PM, Ian Collins <[email protected]> wrote: > > Richard Elling wrote: >> >>> On Jan 28, 2016, at 1:09 AM, Ian Collins <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> It isn't usually a good idea to put both log and cache on the same SSD. >>> Unless you are using your SmartOS box as file server, ditch the cache and >>> just use a log device, the whole SSD, not a partition. It also isn't a good >>> idea to use an SSD without power fail protection for a log. >> >> FWIW, this is becoming less true as SSDs improve. In the bad old days, some >> SSDs were much better >> at write-intensive workloads (orders of magnitude). Today, there are many >> SSDs that do well for both >> read and write-intensive workloads and the difference between >> write-intensities is the amount of OOB >> overprovisioning. Since you can usually influence overprovisioning yourself, >> this reduces the need for >> separate devices. > > I assume that you would still recommend against using SSDs without power fail > protection for log devices?
My requirements in preferred order: 1. honor synchronize cache commands 2. power loss protection — richard -- [email protected] +1-760-896-4422 ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
