Next gen spec sheets suggest the X25-E will get a "Power Safe Write Cache," something it does not have today.
See: http://www.anandtech.com/Show/Index/3965?cPage=5&all=False&sort=0&page=1&slug=intels-3rd-generation-x25m-ssd-specs-revealed (Article is about X25-M, scroll down for X25-E info.) On Tuesday, March 1, 2011, Roy Sigurd Karlsbakk <r...@karlsbakk.net> wrote: >> a) do you need an SLOG at all? Some workloads (asynchronous ones) will >> never benefit from an SLOG. > > We're planning to use this box for CIFS/NFS, so we'll need an SLOG to speed > things up. > >> b) form factor. at least one manufacturer uses a PCIe card which is >> not compliant with the PCIe form-factor and will not fit in many cases >> -- especially typical 1U boxes. > > The box is 4U with some 7 8x PCIe slots, so I think it should do fine > >> c) driver support. > > That was why I asked here in the first place... > >> d) do they really just go straight to ram/flash, or do they have an >> on-device SAS or SATA bus? Some PCIe devices just stick a small flash >> device on a SAS or SATA controller. I suspect that those devices won't >> see a lot of benefit relative to an external drive (although they >> could theoretically drive that private SAS/SATA bus at much higher rates >> than an external bus -- but I've not checked into it.) >> >> The other thing with PCIe based devices is that they consume an IO >> slot, >> which may be precious to you depending on your system board and other >> I/O needs. > > As I mentioned above, we have sufficient slots. As for the SATA/SAS onboard > controller, that was the reason I asked here in the first place. > > So - do anyone know a good device for this? X25-E is rather old now, so there > should be better ones available...... > > Vennlige hilsener / Best regards > > roy > -- > Roy Sigurd Karlsbakk > (+47) 97542685 > r...@karlsbakk.net > http://blogg.karlsbakk.net/ > -- > 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 fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og > relevante synonymer på norsk. > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
