From 1f20db2cda10dfe5b1d8eec8f899fc93481c06cc Mon Sep 17 00:00:00 2001 From: Corey Quinn Date: Sun, 20 Oct 2019 08:57:29 -0400 Subject: [PATCH] Update EBS facts (#727) * Update EBS facts Not sure how this got dropped, but it's nice that it's improved by now! * BYOIP is a thing now --- README.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index f555a3c..dbfcb41 100644 --- a/README.md +++ b/README.md @@ -1017,8 +1017,8 @@ EBS - ⏱**RAID:** Use [RAID drives](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/raid-config.html) for [increased performance](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSPerformance.html). - ⏱A worthy read is AWS’ [post on EBS IO characteristics](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-io-characteristics.html) as well as their [performance tips](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSPerformance.html#d0e86148). - ⏱One can [provision IOPS](http://aws.amazon.com/ebs/details/) (that is, pay for a specific level of I/O operations per second) to ensure a particular level of performance for a disk. -- ⏱A single EBS volume allows 10k IOPS max. To get the maximum performance out of an EBS volume, it has to be of a maximum size and attached to an EBS-optimized EC2 instance. -- 💸Standard EBS volumes improve IOPS with size. It may make sense for you to simply enlarge a volume instead of paying for better performance explicitly. This can in many cases reduce costs by 2/3. +- ⏱A single gp2 EBS volume allows 16k IOPS max To get the maximum performance out of a gp2 EBS volume, it has to be of a maximum size and attached to an EBS-optimized EC2 instance. +- 💸Standard and gp2 EBS volumes improve IOPS with size. It may make sense for you to simply enlarge a volume instead of paying for better performance explicitly. This can in many cases reduce costs by 2/3. - A standard block size for an EBS volume is 16kb. ### EBS Gotchas and Limitations @@ -1205,7 +1205,7 @@ Elastic IPs ### Elastic IP Gotchas and Limitations -- 🔸There is [officially no way](https://forums.aws.amazon.com/thread.jspa?threadID=171550) to allocate a contiguous block of IP addresses, something you may desire when giving IPs to external users. Though when allocating at once, you may get lucky and have some be part of the same CIDR block. +- 🔸There is [officially no way](https://forums.aws.amazon.com/thread.jspa?threadID=171550) to allocate a contiguous block of IP addresses, something you may desire when giving IPs to external users. Though when allocating at once, you may get lucky and have some be part of the same CIDR block. If this is important to you, you may want to [bring your own IP](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-byoip.html), which is more involved than this guide will go into. Glacier -------