Questions tagged [capacity-planning]
Capacity planning is the science and art of estimating the space, computer hardware, software and connection infrastructure resources that will be needed over some future period of time.
12
questions
144
votes
4
answers
44k
views
Can you help me with my capacity planning?
This is a canonical question about capacity planning
Related:
How do you do load testing and capacity planning for web sites?
How do you do load testing and capacity planning for databases?
I have a ...
- 80.4k
124
votes
5
answers
77k
views
How do you do load testing and capacity planning for web sites?
This is a canonical question about capacity planning for web sites.
Related:
Can you help me with my capacity planning?
How do you do load testing and capacity planning for databases?
What are some ...
- 12k
36
votes
2
answers
11k
views
How do you do load testing and capacity planning for databases?
This is a canonical question about capacity planning for databases.
Related:
Can you help me with my capacity planning?
How do you do load testing and capacity planning for web sites?
I'm looking to ...
- 12k
57
votes
2
answers
10k
views
vSphere education - What are the downsides of configuring VMs with *too* much RAM?
VMware memory management seems to be a tricky balancing act. With cluster RAM, Resource Pools, VMware's management techniques (TPS, ballooning, host swapping), in-guest RAM utilization, swapping, ...
13
votes
3
answers
6k
views
MongoDB and datasets that don't fit in RAM no matter how hard you shove
This is very system dependent, but chances are near certain we'll scale past some arbitrary cliff and get into Real Trouble. I'm curious what kind of rules-of-thumb exist for a good RAM to Disk-space ...
- 134k
25
votes
9
answers
23k
views
Maximum number of files in one ext3 directory while still getting acceptable performance?
I have an application writing to an ext3 directory which over time has grown to roughly three million files. Needless to say, reading the file listing of this directory is unbearably slow.
I don't ...
- 1,819
6
votes
2
answers
3k
views
How do I understand my CPU usage on a DNS server?
I have read and understood Can you help me with my capacity planning?, but I'm not sure I understand what my next steps are in a DNS server scenario. I think my CPU loads are high or that I might be ...
- 33.1k
5
votes
1
answer
7k
views
Should VMware HA Admission Control be enabled for small (2/3-host) clusters?
Take the following common scenario... A basic vSphere cluster running two or three hosts, shared storage and a token set of virtual machines under Essentials Plus or greater licensing.
Should HA ...
- 198k
61
votes
8
answers
16k
views
Does bigger capacity SSD have longer life due to wear leveling?
I have been told that you can get a longer lifespan of an SSD if you buy a bigger capacity SSD. The reasoning goes that newer SSDs have wear leveling and thus should sustain the same amount of writing ...
- 3,096
11
votes
6
answers
1k
views
Accurately trending random I/O performance for capacity planning
Where I work we have a numerous "big iron" servers which are used used for hosting many virtual machines using a Xen Hypervisor. These are typically configured with 32GB RAM, Dual Quad core processes ...
- 1,146
7
votes
3
answers
10k
views
When using thin-provisioning with ZFS, how do you make sure you don't run out of physical disk space?
Forgive me if this seems like a fundamental question, but I couldn't really find anything concrete on Google, and I'm not a system administrator by trade.
We are setting up a SAN at our office using ...
- 465
-3
votes
1
answer
664
views
What is the cause of most top-vendor SSD crashes?
I'm referring to total crashes where the SSD doesn't work anymore. Not IO errors.
SSDs have a limited lifespan. So if nothing else goes wrong, eventually they die of NAND wear. My question is what ...
- 47