# Planning **URL:** https://discuss.aerospike.com/c/operations/planning/24.md [Latest](https://discuss.aerospike.com/latest.md) · [Categories](https://discuss.aerospike.com/categories.md) · [Tags](https://discuss.aerospike.com/tags.md) --- ## [About the Planning category](https://discuss.aerospike.com/t/about-the-planning-category/46)
**Author:** [@kporter](https://discuss.aerospike.com/u/kporter)\ **Replies:** 0
Discuss how to plan your Aerospike Deployment - including sizing. --- ## [Why is not reommended to deploy multiple instance of asd in one machine?](https://discuss.aerospike.com/t/why-is-not-reommended-to-deploy-multiple-instance-of-asd-in-one-machine/12113)
**Author:** [@Mark\_Gao](https://discuss.aerospike.com/u/Mark_Gao)\ **Replies:** 6\ **Last updated:** [February 28, 2025, 10:26pm UTC](https://discuss.aerospike.com/t/why-is-not-reommended-to-deploy-multiple-instance-of-asd-in-one-machine/12113 "2025-02-28T22:26:46Z")
Hi, i want to deploy multiple Aerospike instances on a single machine to reduce the size of each individual instance. However, the official documentation does not recommend deploying multiple instances. I would like to k… --- ## [How to restrict aerospike memory usage?](https://discuss.aerospike.com/t/how-to-restrict-aerospike-memory-usage/11342)
**Author:** [@Mark\_Gao](https://discuss.aerospike.com/u/Mark_Gao)\ **Replies:** 2\ **Last updated:** [August 5, 2024, 7:28am UTC](https://discuss.aerospike.com/t/how-to-restrict-aerospike-memory-usage/11342 "2024-08-05T07:28:57Z")
Hi , I would like to ask about the same configuration parameters in aerospike 7 like memory-size. I don’t konw how to restrict aerospike memory usage. Suppose a 3 nodes cluster, every node has 256GB memory, storage-eng… --- ## [Capacity calculator tool](https://discuss.aerospike.com/t/capacity-calculator-tool/1347)
**Author:** [@GeertJohan](https://discuss.aerospike.com/u/GeertJohan)\ **Replies:** 10\ **Last updated:** [January 30, 2024, 12:58am UTC](https://discuss.aerospike.com/t/capacity-calculator-tool/1347 "2024-01-30T00:58:25Z")
Hi guys, I made a simple webpage/tool that lets you calculate the amount of storage required for sets/bins/records. At this point the tool calculates on disk storage requirements without indexes or replication. It only … --- ## [Maximum RAM per cluster](https://discuss.aerospike.com/t/maximum-ram-per-cluster/10114)
**Author:** [@tx\_user](https://discuss.aerospike.com/u/tx_user)\ **Replies:** 1\ **Last updated:** [April 2, 2023, 3:27am UTC](https://discuss.aerospike.com/t/maximum-ram-per-cluster/10114 "2023-04-02T03:27:57Z")
Hello everyone, I read the known limitations Known Limitations | Aerospike Documentation. It says that the cluster can have a max of 5Tb of data. Does this mean RAM? For example, if I have 512Gb RAM servers, can I create… --- ## [Clarification about the limit of cluster size for Community Edition](https://discuss.aerospike.com/t/clarification-about-the-limit-of-cluster-size-for-community-edition/9925)
**Author:** [@Philipp\_Saveliev](https://discuss.aerospike.com/u/Philipp_Saveliev)\ **Replies:** 1\ **Last updated:** [December 20, 2022, 12:37am UTC](https://discuss.aerospike.com/t/clarification-about-the-limit-of-cluster-size-for-community-edition/9925 "2022-12-20T00:37:25Z")
Hello. I’m confused by the docs. From which version (after 4.0) the limit of number of nodes is \> 8 for Community Edition? Or is it 8 for all versions? (We run 4.6 and approaching the limit. Will upgrading help us?) --- ## [Does HWM influence SSD capacity?](https://discuss.aerospike.com/t/does-hwm-influence-ssd-capacity/5388)
**Author:** [@mindstream](https://discuss.aerospike.com/u/mindstream)\ **Replies:** 2\ **Last updated:** [July 28, 2018, 9:16pm UTC](https://discuss.aerospike.com/t/does-hwm-influence-ssd-capacity/5388 "2018-07-28T21:16:39Z")
I’ve been using data-size \* defrag lwm \* rep factor to compute capacity requirements for SSD storage. basically, data \* 2 \* 3 for a cluster with rep=3 how does HWM play into this? or does it? Thanks for your help. --- ## [Horizontal scaling (v3.16.0.6)](https://discuss.aerospike.com/t/horizontal-scaling-v3-16-0-6/5392)
**Author:** [@deepakp](https://discuss.aerospike.com/u/deepakp)\ **Replies:** 3\ **Last updated:** [July 28, 2018, 6:47pm UTC](https://discuss.aerospike.com/t/horizontal-scaling-v3-16-0-6/5392 "2018-07-28T18:47:46Z")
We are using aerospike v3.16.0.6 in our production system. We have a cluster of 2 aerospike nodes with replication factor 2. If my understanding is right it should be possible to horizontally scale disk space on aerospik… --- ## [SSD partitions](https://discuss.aerospike.com/t/ssd-partitions/5245)
**Author:** [@Ren](https://discuss.aerospike.com/u/Ren)\ **Replies:** 5\ **Last updated:** [June 14, 2018, 12:05am UTC](https://discuss.aerospike.com/t/ssd-partitions/5245 "2018-06-14T00:05:21Z")
Hi, we have 6.4\*4=26.4T (Micron 9200 max) SSDs per node and 24 core CPU. By looking at the document https://www.aerospike.com/docs/operations/plan/ssd/ssd\_setup.html . It suggests to have 16 partitions for 16 core CPU. … --- ## [Is there any limit on the cluster size when using mesh heartbeats?](https://discuss.aerospike.com/t/is-there-any-limit-on-the-cluster-size-when-using-mesh-heartbeats/1193)
**Author:** [@ashishbhutani](https://discuss.aerospike.com/u/ashishbhutani)\ **Replies:** 4\ **Last updated:** [March 14, 2018, 10:39pm UTC](https://discuss.aerospike.com/t/is-there-any-limit-on-the-cluster-size-when-using-mesh-heartbeats/1193 "2018-03-14T22:39:15Z")
Hi I am using Mesh/Unicast heartbeats with 4 nodes in my cluster and everything is just fine. But this link on Aerospike configuration (Slide number 50 in that presentation) says that: Aerospike has found that this m… --- ## [Is there a problem if I add 5 nodes in one shot?](https://discuss.aerospike.com/t/is-there-a-problem-if-i-add-5-nodes-in-one-shot/4920)
**Author:** [@Mannoj](https://discuss.aerospike.com/u/Mannoj)\ **Replies:** 20\ **Last updated:** [February 24, 2018, 2:54am UTC](https://discuss.aerospike.com/t/is-there-a-problem-if-i-add-5-nodes-in-one-shot/4920 "2018-02-24T02:54:42Z")
I already have 9Node in a cluster and I would like to add +5 nodes to it. Is it a problem if I bring up all 5 nodes to join the cluster at once? Or should I join one by one and let the migrates to complete on one and the… --- ## [Servers split into two clusters when deploying one cluster with multicast mode](https://discuss.aerospike.com/t/servers-split-into-two-clusters-when-deploying-one-cluster-with-multicast-mode/4905)
**Author:** [@lgs](https://discuss.aerospike.com/u/lgs)\ **Replies:** 1\ **Last updated:** [February 1, 2018, 7:24pm UTC](https://discuss.aerospike.com/t/servers-split-into-two-clusters-when-deploying-one-cluster-with-multicast-mode/4905 "2018-02-01T19:24:08Z")
I use 10 servers to deploy aerospike cluster. Ip list as follow: 10.21.82.145 10.21.81.145 10.21.81.144 10.21.82.144 10.21.82.147 10.21.82.146 10.21.82.141 10.21.82.143 10.21.81.143 10.21.82.142 the config: s… --- ## [IPv6 support](https://discuss.aerospike.com/t/ipv6-support/653)
**Author:** [@jmac](https://discuss.aerospike.com/u/jmac)\ **Replies:** 4\ **Last updated:** [December 28, 2016, 12:41am UTC](https://discuss.aerospike.com/t/ipv6-support/653 "2016-12-28T00:41:42Z")
I was wondering if Aerospike can be installed in a network environment that uses only IPv6. I’ve searched the documentation and not found any references to IPv6, and all the examples use IPv4. If there are docs on this… --- ## [Space Utilization](https://discuss.aerospike.com/t/space-utilization/3017)
**Author:** [@Vikrantsingh\_Bisen](https://discuss.aerospike.com/u/Vikrantsingh_Bisen)\ **Replies:** 3\ **Last updated:** [June 2, 2016, 11:18pm UTC](https://discuss.aerospike.com/t/space-utilization/3017 "2016-06-02T23:18:20Z")
Hi, I’m new to aerospike, I was trying to clone my data in cassandra to aerospike. I’m observing that aerospike is taking way more disk space as compare to cassandra for same amount of data. My copy script is still in pr… --- ## [Defrag-lwm-pct and device usage - what factor to apply for hardware capacity](https://discuss.aerospike.com/t/defrag-lwm-pct-and-device-usage-what-factor-to-apply-for-hardware-capacity/2016)
**Author:** [@ManuelSchmidt](https://discuss.aerospike.com/u/ManuelSchmidt)\ **Replies:** 3\ **Last updated:** [April 6, 2016, 5:08pm UTC](https://discuss.aerospike.com/t/defrag-lwm-pct-and-device-usage-what-factor-to-apply-for-hardware-capacity/2016 "2016-04-06T17:08:51Z")
We are currently estimating the amount of ssd storage we need to acquire to support a dataset of size x in gigabytes. In the docs and this forum we found multiple statements: defrag-lwm-pct should not be set above ~50%… --- ## [Difference between recored inside set and without set](https://discuss.aerospike.com/t/difference-between-recored-inside-set-and-without-set/2761)
**Author:** [@nishant.nitjsr](https://discuss.aerospike.com/u/nishant.nitjsr)\ **Replies:** 1\ **Last updated:** [March 31, 2016, 6:50pm UTC](https://discuss.aerospike.com/t/difference-between-recored-inside-set-and-without-set/2761 "2016-03-31T18:50:08Z")
Aerospike supports record within set and directly within namespace (without any set). What are the use cases for the later one? Is there any performance or functionality limitation on them? My case: I will have lots … --- ## [Virtualization: VD vs Non-RAID mode for SSD](https://discuss.aerospike.com/t/virtualization-vd-vs-non-raid-mode-for-ssd/2078)
**Author:** [@Firm](https://discuss.aerospike.com/u/Firm)\ **Replies:** 1\ **Last updated:** [November 5, 2015, 12:50pm UTC](https://discuss.aerospike.com/t/virtualization-vd-vs-non-raid-mode-for-ssd/2078 "2015-11-05T12:50:56Z")
Hi, I have two options on Dell H730 (LSI Megaraid) controller for my AE servers running on VMs: Create VD (virtual drive) for each SSD attached (set read/write/drive cache policy, ncq etc via RAID BIOS or MegaCLI) and… --- ## [Size of the primary index](https://discuss.aerospike.com/t/size-of-the-primary-index/1241)
**Author:** [@mlabour](https://discuss.aerospike.com/u/mlabour)\ **Replies:** 4\ **Last updated:** [May 7, 2015, 6:16pm UTC](https://discuss.aerospike.com/t/size-of-the-primary-index/1241 "2015-05-07T18:16:20Z")
The following document says Primary Index Calculated via: 64 bytes × (replication factor) × (number of records) Please can you shed some light on why there is need 64 bytes per record? Is there flexibility to al… --- ## [How to properly plan huge storage](https://discuss.aerospike.com/t/how-to-properly-plan-huge-storage/1790)
**Author:** [@nikitoz](https://discuss.aerospike.com/u/nikitoz)\ **Replies:** 1\ **Last updated:** [September 11, 2015, 4:36pm UTC](https://discuss.aerospike.com/t/how-to-properly-plan-huge-storage/1790 "2015-09-11T16:36:28Z")
Hello. For one of our new projects we need to place big amount of data (about 800 000 000 keys) to fast storage. We would like to use Aerospike Community Edition as a storage. The data is a string key-value pairs. So for… --- ## [Least Available Percentage (Avail Pct) decreasing](https://discuss.aerospike.com/t/least-available-percentage-avail-pct-decreasing/1479)
**Author:** [@alex7](https://discuss.aerospike.com/u/alex7)\ **Replies:** 3\ **Last updated:** [July 13, 2015, 1:24pm UTC](https://discuss.aerospike.com/t/least-available-percentage-avail-pct-decreasing/1479 "2015-07-13T13:24:14Z")
Hello, I can not figure out how to fix least available% which is getting lower. I have tried coldstart with no effect and after that I added one more file to storage-engine, disk capacity increased but least avail rema… --- ## [Cluster vs Node Capacity Planning](https://discuss.aerospike.com/t/cluster-vs-node-capacity-planning/1385)
**Author:** [@damian](https://discuss.aerospike.com/u/damian)\ **Replies:** 4\ **Last updated:** [July 1, 2015, 6:11pm UTC](https://discuss.aerospike.com/t/cluster-vs-node-capacity-planning/1385 "2015-07-01T18:11:41Z")
Hi, I’ve been reading the docs about Linux Capacity Planning. I’m planning on deploying a cluster with a single namespace with a Memory with HDD Persistence storage engine. From what I read in the docs, it’s not clear to… --- ## [Multi-threaded performance](https://discuss.aerospike.com/t/multi-threaded-performance/1238)
**Author:** [@coolfrood](https://discuss.aerospike.com/u/coolfrood)\ **Replies:** 3\ **Last updated:** [May 8, 2015, 11:34pm UTC](https://discuss.aerospike.com/t/multi-threaded-performance/1238 "2015-05-08T23:34:06Z")
Hi, I’m investigating lookup performance of Aerospike using the Java client from Spark. We have an 18-node Aerospike setup (1 disk each). For my use case, we have 64 processes with 1 client instance each, and 5 thread… --- ## [Capacity Planning - indexes](https://discuss.aerospike.com/t/capacity-planning-indexes/1221)
**Author:** [@Doug](https://discuss.aerospike.com/u/Doug)\ **Replies:** 7\ **Last updated:** [May 4, 2015, 10:46pm UTC](https://discuss.aerospike.com/t/capacity-planning-indexes/1221 "2015-05-04T22:46:50Z")
When doing a memory calculation for indexes, are both primary and secondary records used in the calculation on a given node, or just primary records? https://www.aerospike.com/docs/operations/plan/capacity/ Thanks, Dou… --- ## [Stop Writes](https://discuss.aerospike.com/t/stop-writes/1226)
**Author:** [@Abhi](https://discuss.aerospike.com/u/Abhi)\ **Replies:** 3\ **Last updated:** [May 2, 2015, 11:08am UTC](https://discuss.aerospike.com/t/stop-writes/1226 "2015-05-02T11:08:50Z")
Is there any way writes can be stopped completely during a network partition of any kind. Is there any such option. Reads should still be supported. For writes, I want my system to be CP and for reads it should be AP. … --- ## [A New Aerospike Use Case (Complete dataset on each node across wide area network)](https://discuss.aerospike.com/t/a-new-aerospike-use-case-complete-dataset-on-each-node-across-wide-area-network/1230)
**Author:** [@Stigz](https://discuss.aerospike.com/u/Stigz)\ **Replies:** 2\ **Last updated:** [May 1, 2015, 6:02am UTC](https://discuss.aerospike.com/t/a-new-aerospike-use-case-complete-dataset-on-each-node-across-wide-area-network/1230 "2015-05-01T06:02:02Z")
I have a great deal of experience with Aerospike in high throughput, low-latency environments, and have come to love it, although I have a new need now that doesn’t seem to be the focus of any popular NoSQL solutions, so… --- ## [How to manage traffic spike for single data item?](https://discuss.aerospike.com/t/how-to-manage-traffic-spike-for-single-data-item/449)
**Author:** [@anm](https://discuss.aerospike.com/u/anm)\ **Replies:** 8\ **Last updated:** [April 16, 2015, 1:29am UTC](https://discuss.aerospike.com/t/how-to-manage-traffic-spike-for-single-data-item/449 "2015-04-16T01:29:59Z")
Hi, I am going through the aerospike documentation and it is an interesting implementation. Almost everything is handled for a internet scale performance. Let us say I implement it for an ecommerce site, and offer an un… --- ## [Which Aerospike driver implementation / client has the best performance and the most complete functionality?](https://discuss.aerospike.com/t/which-aerospike-driver-implementation-client-has-the-best-performance-and-the-most-complete-functionality/955)
**Author:** [@MichaelRempel](https://discuss.aerospike.com/u/MichaelRempel)\ **Replies:** 2\ **Last updated:** [February 26, 2015, 3:30am UTC](https://discuss.aerospike.com/t/which-aerospike-driver-implementation-client-has-the-best-performance-and-the-most-complete-functionality/955 "2015-02-26T03:30:11Z")
Wondering which driver implementation has the best speed / completeness for the latest version. I am thinking lots of clients, synchronous mostly but async is not out of the question. This is for a middle tier data pump… --- ## [Increasing maximum number of bins per namespace](https://discuss.aerospike.com/t/increasing-maximum-number-of-bins-per-namespace/169)
**Author:** [@oldforum](https://discuss.aerospike.com/u/oldforum)\ **Replies:** 3\ **Last updated:** [August 16, 2014, 12:12am UTC](https://discuss.aerospike.com/t/increasing-maximum-number-of-bins-per-namespace/169 "2014-08-16T00:12:43Z")
Hi, i would like to evaluate Aerospike for a project which employs a data model that can (theoretically) result in the creation of millions of columns (bins). Are there fundamental reasons why the max. number of bins p… --- ## [Rotational Disks--Supported?](https://discuss.aerospike.com/t/rotational-disks-supported/961)
**Author:** [@Phil\_Sandler](https://discuss.aerospike.com/u/Phil_Sandler)\ **Replies:** 1\ **Last updated:** [February 17, 2015, 6:49pm UTC](https://discuss.aerospike.com/t/rotational-disks-supported/961 "2015-02-17T18:49:21Z")
I am in the very (!) early stages of evaluating Aerospike. One of the first things I need to understand is the deployment/server/hardware requirements. There seems to be conflicting information about whether hard disks… --- ## [Does write cache on RAID controller matter for SSD?](https://discuss.aerospike.com/t/does-write-cache-on-raid-controller-matter-for-ssd/447)
**Author:** [@mingfai](https://discuss.aerospike.com/u/mingfai)\ **Replies:** 6\ **Last updated:** [January 2, 2015, 9:11pm UTC](https://discuss.aerospike.com/t/does-write-cache-on-raid-controller-matter-for-ssd/447 "2015-01-02T21:11:57Z")
when using spinning hard drives for database system, I believe the conventional wisdom is to use RAID controller with (battery/flash backed) write cache (BBWC/FBWC) and use write back mode. am i correct that, for SSD, u… [Next page](https://discuss.aerospike.com/c/operations/planning/24.md?page=1)