On 01/07/2017 10:04 PM, Benjammin2068 wrote:
On 01/07/2017 04:04 AM, Wols Lists wrote:
On 06/01/17 16:14, Benjammin2068 wrote:
* the other as a data drive for use with surveillance software (from Milestone probably) running in a VM as a secondary storage vault for company cameras/NVRs that are remote. (like a backup system)
If you were planning on a raid-6, how about a mirror for this drive? I
believe it is not a good choice for a general raid, but if you're only
writing *NEW* stuff for the most part, and streaming big files to disk,
how about these new WD shingled disks (Purples, I believe).
This sounds like one of the few use cases where they might be a good
idea. Worth considering, at least. Might even work well in your planned
raid-6 config.
Yea, I thought about that too. So you're suggesting a RAID1 consisting of (2) RAID6 arrays.
That's not sane. RAID 10, or more precisely, RAID 0 over many RAID 1
pairs, will yield more usable capacity and without the parity penalty or
RMW cycles.
Will mdadm do that?
Also in other news.... (maybe someone from this list can help since they've run into it before)
The motherboard of the computer has its own SATA controller as usual... as well as this Avago SAS controller.
When CentOS 7 boots up, it enumerates the external SAS drives starting at /dev/sda instead of the motherboard's drives.
The OCD in me wants the MB's SATA drives as /dev/sda-sdd.
Where does one even control that enumeration order? udev? Eeks.
(I'm not finding a query that google makes sense out of to give me a decent set of suggested links.)
-Ben
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
