[OpenIndiana-discuss] Good SLOG devices?

[Patrick O'Sullivan]

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 <roy at 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
> roy at 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.
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