On 12/23/2014 05:58 AM, jdd wrote:
Le 23/12/2014 09:23, Andrei Borzenkov a écrit :
As usual it is tradeoff between cost of protection and value of data that is being protected.
not really. I have at least as many disks as with a raid, but a power surge wont destroy all (at least a set is not on line nor even at home).
the best should to have the two systems, but them it's really expensive (I have a gran total of 17 hard disks for approx 15Tb total data, including backups :-)
but why /boot on raid? the /boot disk part will never be damaged, given on such config one boot nearly never...
the best could be a sd card with only /boot :-)
"Expensive" ??!!?? Many of my clients are banks. The expense of downtime or data loss would exceed the cost of "mirrored" equipment or running a 'hot backup' site on another tectonic plate & power grid. Yes they want something that is cost-efficient, but not so much so that it compromises the business survivability. The 9/11 event taught us that! Another of my clients, a high street retailer, has a marketing department running a AIX SP3 multiprocessor rack with a room 12'x60' and a RAID array along the 60' wall. That's just the "big data" used for sales analysis. One holiday w/e when the stores were closed I had to upgrade the microcode on those drives! Six hundred some drives (thank god for perl!) mixed 500G/750G. That was 12 years ago. I hate to think what they have now! Marketing doesn't believe in 'hot backup sites' the way banks do! Basically they NEVER backed up that data. For SMB/home users the large drives and the vendor's shift to drives that don't live forever as the old 20G and 30G drives seem to (we've discussed this before) can be uncomfortable. The problem becomes 'too much" storage, that sucks stuff in, makes backup uncomfortable and crashes the day after warranty runs out. *sigh* I'd run the OS/desktop from one of the 30G drives and everything else NFS'd/mirrored, even at home, but my Dell desktop only takes SATA. I'm experimenting with SATA/ATA converters but they don't seem to want to allow writes. *sigh* -- /"\ \ / ASCII Ribbon Campaign X Against HTML Mail / \ -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org