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0
votes
0answers
122 views

solaris 9 + metastat + State: Unavailable

please advice I have Netra HW machine with Solaris 9 from metastat command I see the following problems "State: Unavailable" , I give here partial output because the output is very long please ...
0
votes
1answer
65 views

Poor disk performance with high disk capacity usage

I've heard numerous times in the web hosting industry that using "too much" disk space on a drive is bad for performance. Is this just a myth? Can someone explain why this is an issue, even in a ...
1
vote
1answer
2k views

Any performance difference to identical spec of LFF disks vs SFF disks?

Example: HP 146GB LFF 6G SAS 15k vs HP 146GB SFF 6G SAS 15K bit-size, cache, interface speed and rpms are the same, physical size is obviously different -- what about actual real life tested ...
4
votes
2answers
8k views

kvm low io performance

performance of my setup is quite good (geekbench, how it 'feels', ...) even disc throughput (libvirt on raw lvm-partition) is very close to the raw performance on the server) but IOP/s are as low as ...
27
votes
9answers
5k views

To improve SQL performance, why not just put lots of RAM rather than having faster hard disks?

People keep telling me that in order to improve an SQL server's performance, buy the fastest hard disks possible with RAID 5, etc. So I was thinking, instead of spending all the money for ...
4
votes
6answers
413 views

Is there a Linux utility that can distribute files to an array of hard disks, like a load balancer, but for storage?

I have 2 1TB disks not in any RAID configuration. I'd like files I need to store to be placed on one of the disks depending on the capacity of the disks, and when accessing the file I suppose I'd need ...
3
votes
3answers
947 views

Drobo-like linux file server - how do I do it?

I've been pondering for a long time about how I can set up a server which operates much like the Drobo storage thing. The reasons I don't actually want a drobo is because I've heard scare stories, ...
1
vote
2answers
192 views

Measuring disk performance for random seeks?

I'm setting up a server that involves lots of database writing during regular updates, and I have wildly varying results between different machines. I'm trying to find out what I can expect from ...
1
vote
1answer
672 views

Partition device missing after partitioning LV with sfdisk

I've successfully partitioned a logical volume (/dev/dm-2) using sfdisk and fdisk -l now reports there to be a partition /dev/dm-2p1 as desired. However, this device does not seem to exist in /dev/ ...
20
votes
8answers
538 views

Server vendor that allows 3rd party disks

As noted here, Dell is no longer allowing 3rd party disks to be used with their latest servers. As in, they don't work period. Which means that if you buy one of these boxes and want to upgrade the ...
4
votes
2answers
1k views

Visually identifying Dell disks on Solaris

I have a Dell PE1950 running the latest OpenSolaris, connected to a Dell MD1000 enclosure with 15 disks in it. I am not using PERC to control the disks, instead I use a simple SAS 5/E (LSISAS1068) ...
16
votes
14answers
8k views

How can I destroy data on a failed hard disk without voiding warranty?

Suppose I have a hard disk with data I don't want to expose to a third party. The warranty period for that disk still lasts. Now the disk starts malfunctioning. I can't use a disk wiping program on a ...