And I'm saying that you have to evaluate these things as systems, not the base level tech.
> On Aug 28, 2014, at 8:06 AM, Espen Johansen <[email protected]> wrote: > All I'm saying is that a normal SLC cell can handle about 10 times more > writes then a MLC if everything else is the same. And as far as I ca tell, > the ability to handle writes is the OPs main concern. A SLC based SDHC card > will have about 10 times longer life span in that regard. > If you want it perfect then sure there are better options and technologies. > I'm just trying to make the choice a easy one based on what the OP asked. > There is allways better cheaper and faster tech just around the corner. > > 27. aug. 2014 21:26 skrev "Jim Thompson" <[email protected]> følgende: >> SD cards are storage, but not “disks” nor “drives”. >> >> Beyond m-SATA, eMMC is your best option. Not only are they faster than SD >> cards (speeds of the larger devices rival those of traditional SSDs, as well >> as supporting a “TRIM”-like operation, priority interruptible READ and ERASE >> operations, background operations, and riding the cost-curve of cellular >> handsets (growing) .vs consumer point-and-shoot cameras (shrinking), etc.) >> >> (This, by the way, is a huge, huge ‘hint’.) >> (You may wish read between the lines.) >> >> A lot of the SLC / MLC mythos is from before the days of JEDEC standards for >> endurance, advanced wear-leveling algorithms, and before a lof of the >> firmware engineers understood concepts such as “read disturbance”, “write >> disturbance”, and “ECC correction thresholds”. It’s certainly not as simple >> as you’re making it out to be. >> >> (This, again, is the big reason that Netgate stayed out of the early fracas >> around SSDs.) >> >> I’m not going to depend on what someone said in the forum over 3 years ago, >> since it’s unlikely to apply today. >> >> Jim >> >>> On Aug 27, 2014, at 1:32 PM, Espen Johansen <[email protected]> wrote: >>> >>> For completeness sake. >>> Just to clarify. You can get SDHC cards that are SLC based. Pretty much >>> everything called industrial grade SD/SDHC will be a SLC SSD in SD format. >>> >>> Understood. Thank you for the clarification. >>> >>> Would it be possible to have the description updated on the sales page? It >>> only says you can boot via SD through USB. >>> >>> -- >>> Ryan Coleman >>> [email protected] >>> m. 651.373.5015 >>> o. 612.568.2749 >>> >>>> On Aug 27, 2014, at 9:24, Jim Thompson <[email protected]> wrote: >>>> >>>> >>>> Yes, the system can be booted from an SD (or SDHC) card. Or from USB, or >>>> from the m-SATA. >>>> >>>> All of these require proper preparation of the requisite ‘disk’ (-like >>>> device). >>>> >>>> Jim >>>> >>>>> On Aug 27, 2014, at 9:21 AM, Ryan Coleman <[email protected]> wrote: >>>>> >>>>> I understand *that* however it doesn't say on the features page it can be >>>>> booted off the SD slot - is that true? If so I have to change a few >>>>> quotes I have in play as they will need to get mSATA SSDs instead. >>>>> >>>>>> On Aug 27, 2014, at 9:20, Jim Thompson <[email protected]> wrote: >>>>>> >>>>>> >>>>>> The SD (SDHC describes some cards which work in the slot) card slot is a >>>>>> “base feature”. If people choose to fit a m-SATA drive, >>>>>> then they can. Or they can use the SD card socket. >>>>>> >>>>>> It’s not like we’re going to de-solder the SD card socket if it’s not >>>>>> going to be used. >>>>>> >>>>>> Neither are we going to carry two different SKUs (one with, one without). >>>>>> >>>>>> Jim >>>>>> >>>>>>> On Aug 27, 2014, at 7:57 AM, Ryan Coleman <[email protected]> wrote: >>>>>>> >>>>>>> Why not answer the question? >>>>>>> >>>>>>> >>>>>>>> On Aug 27, 2014, at 7:56, Jim Thompson <[email protected]> wrote: >>>>>>>> >>>>>>>> Ryan, >>>>>>>> >>>>>>>> Don't troll. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> On Aug 27, 2014, at 7:33 AM, Ryan Coleman <[email protected]> wrote: >>>>>>>>> >>>>>>>>> Wait, so the SDHC slot on this board is simply for show? >>>>>>>>> >>>>>>>>>> On Aug 26, 2014, at 13:56, Sergii Cherkashyn >>>>>>>>>> <[email protected]> wrote: >>>>>>>>>> >>>>>>>>>> Thank you Espen, >>>>>>>>>> >>>>>>>>>> Squid is for filtering purpose only, not to save bandwidth. >>>>>>>>>> On Netgate they have only this SSD as an option. But I’ll keep your >>>>>>>>>> advice in mind. >>>>>>>>>> >>>>>>>>>> Best regards, >>>>>>>>>> Sergii Cherkashyn >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Date: Mon, 25 Aug 2014 20:45:46 +0200 >>>>>>>>>> From: Espen Johansen <[email protected]> >>>>>>>>>> To: pfSense support and discussion <[email protected]> >>>>>>>>>> Subject: Re: [pfSense] Netgate APU2 SSD module question >>>>>>>>>> Message-ID: >>>>>>>>>> >>>>>>>>>> <caadq7-adzhlsv1p6rl7kwaaomaws1uqcet6fxa5ngdn8sl5...@mail.gmail.com> >>>>>>>>>> Content-Type: text/plain; charset="utf-8" >>>>>>>>>> >>>>>>>>>> I personally don't think you will have an issue with too many writes >>>>>>>>>> in a normal environment. Why squid tho? if its for filtering fine. >>>>>>>>>> For acceleration and 3-6 persons it will most likely not do you much >>>>>>>>>> good. >>>>>>>>>> Also check MLC vs SLC. SLC based SSD will last longer. Approximately >>>>>>>>>> 10 times longer. And even more with the right write leveling tech. >>>>>>>>>> >>>>>>>>>> Just my 2 cents. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> List mailing list >>>>>>>>>> [email protected] >>>>>>>>>> https://lists.pfsense.org/mailman/listinfo/list >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> List mailing list >>>>>>>>> [email protected] >>>>>>>>> https://lists.pfsense.org/mailman/listinfo/list >>>>>>>> _______________________________________________ >>>>>>>> List mailing list >>>>>>>> [email protected] >>>>>>>> https://lists.pfsense.org/mailman/listinfo/list >>>>>>> _______________________________________________ >>>>>>> List mailing list >>>>>>> [email protected] >>>>>>> https://lists.pfsense.org/mailman/listinfo/list >>>>>> >>>>>> _______________________________________________ >>>>>> List mailing list >>>>>> [email protected] >>>>>> https://lists.pfsense.org/mailman/listinfo/list >>>>> _______________________________________________ >>>>> List mailing list >>>>> [email protected] >>>>> https://lists.pfsense.org/mailman/listinfo/list >>>> >>>> _______________________________________________ >>>> List mailing list >>>> [email protected] >>>> https://lists.pfsense.org/mailman/listinfo/list >>> >>> _______________________________________________ >>> List mailing list >>> [email protected] >>> https://lists.pfsense.org/mailman/listinfo/list >>> _______________________________________________ >>> List mailing list >>> [email protected] >>> https://lists.pfsense.org/mailman/listinfo/list >> >> >> _______________________________________________ >> List mailing list >> [email protected] >> https://lists.pfsense.org/mailman/listinfo/list > _______________________________________________ > List mailing list > [email protected] > https://lists.pfsense.org/mailman/listinfo/list
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