Archive for April, 2006
For the last 4 months, I’ve had a 4TB storage array (=16x320Gb WD RE SATA hard disks) sitting in my front room.
Doing nothing. Nothing at all.
The reason? SATA RAID cards are _unfeasibly_ bad. Here’s what I’ve tried so far, under linux (various kernel versions and distributions):
– an Adaptec 21610SA. This lasts about 4 hours before it does the classic aacraid: scsi hang? (google for it, lots of references). Adaptec sent me a “heat sync” (sic.) for some reason, in a russian doll style series of packaging.
Is this isolated? From friends I know of:
– At least two other machines containing Adaptec AAC series cards with the scsi hang? issue;
Good news? I got to play with an Areca-1160. Managed 24 hours without an issue, so that’s the best so far. If I can find someone who distributes them in the UK, I’ll get one!
Random technical details:
– I break the cards with dd if=/dev/sdX of=/dev/null (x10); dd if=/dev/zero of=fooX (x10); bonnie++ (x10); and cp -a on a kernel tree (x10). IoW, just a bit of IO.
I can’t believe these companies get away with peddling such crap. But then I suppose so do Highpoint and Promise to name a few I’ve seen shite (ATA-100/ATA-66) hardware off in the past.
Is SCSI any better?!
Updated to latest version (0.88.1). I’ve updated in the interm; will try to post other updates in a timely fashion. Do let me know if you are using this, that will be an incentive to do so.
Other fixes are:
– Updated to build with VC8 (VS2005)
You can get the MSI installer & patch here.
Full source code can be downloaded here.