> Adam Leventhal wrote: >> I'd be careful about slicing up the SSDs as IOs to the various slices might >> interact that will impact performance. > [EMAIL PROTECTED] said: > Hi Adam, Thanks for the advice. So, if I just do a mirrored root pool on the > SSDs, can I put slog and L2ARC on zvols? That seems kind of hackish, but I > don't have the resources to put more SSDs in the box. The other bays are > full of 1TB SAS drives that I plan to make into the primary datastore using > raidz.
Yes, this advice was unexpected to me. Slicing up a spinning disk drive is going to cause lots of extra seeks, but I'm having a hard time imagining that an SSD is going to even notice that it's been sliced up. Even if it does affect performance, it's got to be orders of magnitude less than the effect on a spinning disk drive. We've been slicing OS/boot drives and using the remainder in mirrored ZFS pools for a couple years now, and performance is perfectly fine -- less than using whole disks, yes, but still perfectly useable, just like things were before ZFS came along, back when slicing disks was what everyone did all the time. So, enlighten me: How can slicing an SSD into logical partitions slow things down, anyway? Regards, Marion _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
