An SLC SSD would probably be substansially slower than an array of MLC SSDs, and would be likely to slow down the system for sync writes.
----- Opprinnelig melding ----- > Hi, > from what I understood from negative experience with a 12-drive SSD > RAID > set build with MDRaid on linux, and from answers to a related question > I > raised recently in this list, it is not so easy to engineer a > configuration using a large count of SSDs anyhow. The budget option, > using SATA SSDs, seems to be critical in some terms. Using an SSD type > based on a controller using compression seems to be a suboptimal > choice > for any data that will not compress efficiently (which is more likely > writing as a stripe set (RaidZn)). Other concern seems to be SATA vs > SAS > in general, and compatibility of SATA SSDs with the usual SAS HBAs and > - > Extenders. > One should be aware that any of these aspects is prone to make the > vdev > unresponsible, or even kick drives out of the vdev. Should that be a > systematic issue, the stripe set will not rebuild properly or even be > lost in an instant, with no parity level offering protection. > > Another option could be to look into a setup that is using a SLC or > RAM-based ZIL device, and/or a large SSD based L2ARC. That's what I am > looking into, currently. > > BR > > Sebastian > > _______________________________________________ > OpenIndiana-discuss mailing list > [email protected] > http://openindiana.org/mailman/listinfo/openindiana-discuss -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 [email protected] http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
