My client has purchased over 100 OCZ Talos 2 drives. Dell MD1220 JBODs. Dell R710 Servers with 144GB of ram. STEC Zeusram drives. LSI 9207e HBA cards.
I have setup Nexenta for them and I have been very underwhelmed by the benchmarks thus far. Specifically the writes. No matter what configuration, even RAID0 with 48 drives. I have trouble getting more that 200MB writes. Reads are phenomenal topping out at 25GB.
Troubleshooting so far.
-We have had 24 STEC ZeusIOP drives brought in since OCZ was initially blamed for the poor performance. The STECs suffered from the same poor write performance.
-We have added 8 Zeusram drives as a log and that has not improved the performance.
-We have tried the latest Open Indiana.
My question is are there any tunable zfs settings that may be geared towards spinning disks and not ssds that would improve performance? Does anyone else have experience with large SSD pools? Any other suggestions?
I have setup Nexenta for them and I have been very underwhelmed by the benchmarks thus far. Specifically the writes. No matter what configuration, even RAID0 with 48 drives. I have trouble getting more that 200MB writes. Reads are phenomenal topping out at 25GB.
Troubleshooting so far.
-We have had 24 STEC ZeusIOP drives brought in since OCZ was initially blamed for the poor performance. The STECs suffered from the same poor write performance.
-We have added 8 Zeusram drives as a log and that has not improved the performance.
-We have tried the latest Open Indiana.
My question is are there any tunable zfs settings that may be geared towards spinning disks and not ssds that would improve performance? Does anyone else have experience with large SSD pools? Any other suggestions?