On Wed, Dec 13, 2017 at 8:29 AM, Carlos E. R. <robin.listas@telefonica.net> wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
On Wednesday, 2017-12-13 at 13:27 +0100, Per Jessen wrote:
Greg Freemyer wrote:
On Tue, Dec 12, 2017 at 10:37 PM, Andrei Borzenkov <> wrote:
13.12.2017 02:54, Greg Freemyer пишет:
> > I also think of a ramdisk as being bootable
media.
I also "don't" think ...
Well, there are NVDIMMs, so theoretically why not ...
Andrei,
Do you find the term ramdisk appropriate to describe NVMe SSDs?
It just seems wrong to me.
For instance, the idea of disconnecting a ramdisk from one computer and moving it to another and having the data still be readable doesn't sound like a ramdisk feature, but it works nvme ssd cards.
"ramdisk" doesn't right to me - years ago, we called it a solid-state disk.
Ramdisk is what it has always been, i.e. an emulated disk backed by main memory.
That's right. We can not use the term RAM DISK to name those new "disks" because the term currently means an emulated disk in internal RAM memory. The correct term is "solid state disk".
They also are not ram disks because they do not use RAM chips. Or do they?
Long ago I knew more about the chips. We used to refer to DRAM for dynamic ram. The bits in the DRAM chips would disappear in a few seconds (or less) of the data wasn't refreshed by a strobe. It is clear that NVMe SSDs don't use DRAM chips, but could one call the chips they use RAM, I don't know. I'm sure they have the internal erase block (EB) feature/architecture of SATA interfaced SSDs. The EB architecture means the data once written is stable until electricity is used to erase a block of memory for re-use. There is a controller that lives on the SSD that manages the EB allocation and sector mapping from a logical sector to a physical EB and internal EB offset. To me this is nothing at all like what I think of when I see the term RAMDISK. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org