One volume my Drobo provides causes errors at boot.
Link to syslog here.
Drobo-S 3rd Generation, 5x WD Caviar Green 2TB, Droboraid5 providing 4x 2.2TB volumes to Dell PowerEdge R210 via an eSATA cable rated at 600 GB/s.
Virtual Drobo Volume 4 is a hotspare to an internal RAID array, & that’s the one that errors during boot.
Not only does it print errors all over the screen, it throttles throughput down from UDMA/133 to UDMA/100.
How do I get the UDMA back up to 133?
How do I resolve the error?
UDMA/133 and UDMA/100? where does it tell you that is changing? are you using PATA drives in your internal raid?
SATA doesnt use UDMA modes like that
how full is your drobo?
i suspect the problem is that drobo only works with specific file system… HFS/NTFS/EXT3. if you are trying to use a volume as part of a raid array - it just getting array data written to it, not a proper file system (the filesystem will be spread out over your software RAID). so basically it wont work since you arent formatting volume 4 to a filesystem, as drobo requires.
“I think it’s absolute crap that the drobo only supports antiquated filesystems.”
you do realise its not “true” raid?
it protects blocks - either by mirroring them or through parity - if it cant read the file system, it doenst know what to protect.
for desktop filesystems HFS/NTFS/EXT3 cover probably more than 99% of peoples needs, i was frankly surprised it did ext3 since most desktop users which is what drobo is really aimed at, are probably either windows or mac.
if you want customisable get a synology box or something, its running linux, you can putty/ssh into it do whatever the hell you want with the disks. in fact some people have even installed windows home server onto their synology! (its a dual core atom with 2GB of ram and up to 10 disks).
the website and pre-sales information is very explicit in what filesystems it does support, so if it doesnt support the file system you want to use, then frankly, why did you buy it?
i think they still have a fairly good resale value on ebay? (ive shifted some of my old ones - my original v2 drobo (driven mainly by changes in the £/$ exchange rate) i got more for than i bought it for originally