On Wed, Jun 15, 2011 at 21:12, LLLActive@GMX.Net <LLLActive@gmx.net> wrote:
@ Philipp
*Original sent by / Original von / Oorspronklik van:* Philipp.Thomas2@gmx.net - Wed, 15 Jun 2011 22:16:01 +0200
On Sat, 11 Jun 2011 18:38:58 +0200, "LLLActive@GMX.Net" <LLLActive@GMX.Net> wrote:
Unfortunately, the Qnap is a softraid on a Linux box it seems.
http://www.whichnas.net/network-attached-storage/qnap-ts-410-nas-product-rev...
Then a HW Raid is preferable.
Why? This is a Linux that more or less only does RAID and nothing else and the transfer speeds it reaches are really nice.
Philipp
*This Reply from / Antwort von / Antwoord van:* LLLActive@GMX.Net - 2011-06-16 - 02:49:34 +0200
Because I do not know how to successfully restore a broken software array. I had to remake a software array in the past, and put the backups on the newly created array. With HW-RAID it was a piece of cake to rebuild a raid 5 with a 3Ware 4 port sata RAID running on the remaining 3 disks, rebuilding with a new 4th drive while the system was running normally. The rebuild was started with the HW-RAID's bios, allowing normal booting and server operation(albeit a little slowed down), during the rebuild.
I was hanging around the PC shop and someone brought one of those NAS appliances and said they couldn't access it. SMART indicated one of the drives was failing. I assumed the appliance ran Linux but feared its 2 drives were in RAID-0. I plugged the drives into a PC and booted the 11.4 GNOME live CD and discovered it was a spanned array. With 1 click in Disk Utility I started the RAID array and with another I mounted it. I used dd_rhelp to copy to another drive. I'm not sure if or how you could interact with Disk Utillity to say restore the RAID array to a working state. Whenever I've had a RAID-1 issue I've been able to mount the individual partitions of the array.
I do not trust a software raid from personal and the experience of (or reason given by) joakimsen@gmail.com - Tue, 7 Jun 2011 15:48:32 -0400
Don't forget the big picture. Just today one of my sites had a down server, RAID array not detected. The RAID controller's on the motherboard and it will be down until parts arrive. There are other identical servers but all all running more important applications, but we can bypass this server running the call center management and temporarily route the calls directly to the employee's phones. If you value your data, do you value how rapidly you could access that information. If the server's out of warranty can you afford the parts? Do you need to wait weeks for a purchase order through an approved vendor can be placed? -- Med Vennlig Hilsen, A. Helge Joakimsen -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org