Slow Replication

[jon hatton-brown]

I just destroyed the RAID on both the servers and put a single SATA 1TB in my Secondary, and a single 600GB 15K SAS in my Primary.

Its replicating at 44448 kB/s (22568 kB/s).

I'm going to investigate RAID further this afternoon

[jon hatton-brown]

This is obviously a lot faster than the 800kB/s I've been getting up till now.

[jon hatton-brown]

RAID 0 (1 Disk)
DSS1 to DSS2 - 8588 kB/s
DSS2 to DSS1 - 22548 kB/s

RAID 1+0 (2 Disks)
DSS1 to DSS2 - 8772 kB/s
DSS2 to DSS1 - 11960 kB/s

RAID 5 (3 Disks)
DSS1 to DSS2 - 1560 kB/s
DSS2 to DSS1 - 2050 kB/s

RAID 5 (6 Disks)
DSS1 to DSS2 - 600 kB/s
DSS2 to DSS1 - 600 kB/s

RAID 5 (12 Disks)
DSS1 to DSS2 - 600kB/s
DSS2 to DSS1 - 600kB/s

[jon hatton-brown]

Has anyone else used either the HP P212 or the P410 for Open-E? I've narrowed down my issues to the controller card.

[jon hatton-brown]

After discussing this with Open-E support, it turned out to be two things.

- Replicaiton needed tweaking by Open-E via a remote support session.

- I needed to enable the cache on the physical disks in my RAID.