nice :) about the space, that was my next doubt ehhe thanks ! leave 40gb to ssd "bad blocks" about the writemostly, any comment? 2015-06-13 17:32 GMT-03:00 Mikael Abrahamsson <swmike@xxxxxxxxx>: > On Sat, 13 Jun 2015, Roberto Spadim wrote: > >> hum, but what about the 850 version instead of 840? > > > SSDs have been around for more than 5 years (intel released the X25-M in > 2008 according to wikipedia), TRIM has been around for 4-5 years. > > I have seen so many problems related to TRIM, that I will not use it unless > it comes default on from a manufacturer that has tested the entire chain, > including hardware and software (my Apple laptop for instance). > > We have seen TRIM not being NCQ enabled and stalling performance when doing > TRIM, we have seen firmware bugs that cause drives to lose data when doing > TRIM, we have seen Linux kernel bugs that also caused loss of data. > > First of all, ask yourself why you want TRIM, understand how it works and if > you will benefit, do your research properly, and then enable it. > > Personally, I overprovision my SSDs instead: > > http://www.samsung.com/global/business/semiconductor/minisite/SSD/global/html/whitepaper/whitepaper05.html > https://en.wikipedia.org/wiki/Write_amplification#Over-provisioning > http://www.seagate.com/gb/en/tech-insights/ssd-over-provisioning-benefits-master-ti/ > http://www.edn.com/design/systems-design/4404566/Understanding-SSD-over-provisioning > http://www.kingston.com/en/ssd/overprovisioning > > So I basically leave space on the drive that I don't use. In your case I > would only partition 200GB (or even less) of that 240GB drive, and I would > run it without TRIM. > > > -- > Mikael Abrahamsson email: swmike@xxxxxxxxx -- Roberto Spadim SPAEmpresarial - Software ERP Eng. Automação e Controle -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
