> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Cooper, Rudy
[snip]
> Does anybody see anything questionable about the following
> configuration
> for 100 UV users?
>
>
>
> HP DL580
>
> 2 - dual core 3.20GHz processors
>
> 4 GB memory
>
> 2 - 72GB HDDS - OS RAID1
>
> 6 - 146GB HDDS data RAID5 (710GB usable)
As Glen suggested, RAID10 can offer better performance than RAID5 in the
event of a drive failure. I'm also currently migrating UV to new
hardware but I'm using RAID5 due to rack space constraints. I'm putting
together a 2-node linux HA cluster and am limited to 6 drives for each
2U node. If your circumstances are similar, you might consider setting
aside one of the RAID5 drives as a hot spare. This will minimize
performance degredation in the event of a failure as well as limit the
amount of time without redundancy (assuming you're not replicating to a
2nd server). I pulled a drive from one of the RAID5 arrays while
troubleshooting a faulty controller, and hot-spare rebuild time was
somewhere around 10-15 minutes.
This is our configuration:
IBM xSeries 3650, 1 quad-core Intel 5405 2Ghz CPU, 4GB memory
2 73GB SAS 15K rpm RAID1 for OS
3 73GB SAS 15K rpm RAID5 for data
1 73GB SAS 15K rpm global hot spare (either array)
The following file took just under a minute to select on a freshly
booted node with no UV data cached in the drives or memory:
File name = OI
File type = 11
Number of groups in file (modulo) = 227363
Separation = 4
Number of records = 1503470
Number of physical bytes = 642588672
Number of data bytes = 318032808
Average number of records per group = 6.6126
Average number of bytes per group = 1398.7888
Minimum number of records in a group = 1
Maximum number of records in a group = 18
Average number of bytes per record = 211.5325
Minimum number of bytes in a record = 160
Maximum number of bytes in a record = 4452
Average number of fields per record = 71.1825
Minimum number of fields per record = 71
Maximum number of fields per record = 206
Groups 25% 50% 75% 100% 125% 150% 175% 200%
full
2845 46799 96364 61135 17408 2558 232 22
------------------------------------------------------------------------
-
We have a 101 user UV license and have been running UV on our existing
cluster with an identical RAID configuration (but with 3U nodes) since
'04. Performance has been fine on our existing servers as well.
-John
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