As a photographer of many many years - the SD cards on the market for us exceed the life span of CF.
HOWEVER CF has a much larger potential capacity. If you spend $10 on a card that has a higher end build for $50 you should know your data will fail sooner rather than later. > On Aug 28, 2014, at 9:12, Jim Thompson <[email protected]> wrote: > > 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 > _______________________________________________ > List mailing list > [email protected] > https://lists.pfsense.org/mailman/listinfo/list
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