Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

News

3/30/2010
11:20 AM
George Crump
George Crump
Commentary
50%
50%

Get To Know The Storage I/O Chain

Storage performance problems are often circular challenges. You fix one bottleneck and you expose another one. You can't really fix storage I/O, all you can do is get it to the point that people stop blaming storage for the performance problems in the data center. Getting there requires knowing the storage I/O chain.

Storage performance problems are often circular challenges. You fix one bottleneck and you expose another one. You can't really fix storage I/O, all you can do is get it to the point that people stop blaming storage for the performance problems in the data center. Getting there requires knowing the storage I/O chain.This is the sequence of components that start at the application and work their way down to the physical storage device. And this is a challenge automated tiering systems (ATS) face. These are solutions provided by vendors to attempt to solve storage I/O performance problems. They typically will move data based on the access frequency of that data. The more often the data is accessed the faster tier of storage the data is placed on, eventually landing on solid state disk (SSD).

The less accessed that data is the slower tier of storage that data is placed on, eventually landing on SATA based high capacity hard drives. There is little doubt that ATS will play an important role in the evolution of data center storage and the optimization of that resource. It is however just one component of the storage strategy, especially when it comes to performance.

Each component in the I/O chain needs to be measured and monitored to see if it can justify the investment that ATS and/or SSD are able to give it. Can the application generate enough simultaneous requests? Can the server process all those requests and get them on the NIC fast enough? Can that data travel across the connecting framework, through the switches maintain performance until it reaches the controllers in the storage system? Any break along this chain may obviate the value of ATS.

Ideally you want to upgrade just the right components to just the right level of performance to fix those issues. Determining what components should be upgraded and to what level requires tools to make those decisions. Interestingly most performance upgrades in data centers are more of a "cross your fingers and hope this fixes the problem" type of solution. Just throwing hardware at the problem leads to massive under-utilization and wasted resources.

Tools are needed that can monitor storage I/O performance from the application through the server (virtual or physical), through the HBA card, through the storage infrastructure and on to the storage system. This may even require physical tapping of the environment to get the exact performance benchmarks you need to make those decisions. While investments in these sorts of tools means an investment of precious IT budget dollars, when done as a first step it can avoid unnecessary upgrades and make sure that those upgrades you do implement will perform exactly as expected.

Track us on Twitter: http://twitter.com/storageswiss

Subscribe to our RSS feed.

George Crump is lead analyst of Storage Switzerland, an IT analyst firm focused on the storage and virtualization segments. Find Storage Switzerland's disclosure statement here.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
COVID-19: Latest Security News & Commentary
Dark Reading Staff 8/10/2020
Researcher Finds New Office Macro Attacks for MacOS
Curtis Franklin Jr., Senior Editor at Dark Reading,  8/7/2020
Hacking It as a CISO: Advice for Security Leadership
Kelly Sheridan, Staff Editor, Dark Reading,  8/10/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
Special Report: Computing's New Normal, a Dark Reading Perspective
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
The Changing Face of Threat Intelligence
The Changing Face of Threat Intelligence
This special report takes a look at how enterprises are using threat intelligence, as well as emerging best practices for integrating threat intel into security operations and incident response. Download it today!
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-8720
PUBLISHED: 2020-08-13
Buffer overflow in a subsystem for some Intel(R) Server Boards, Server Systems and Compute Modules before version 1.59 may allow a privileged user to potentially enable denial of service via local access.
CVE-2020-12300
PUBLISHED: 2020-08-13
Uninitialized pointer in BIOS firmware for Intel(R) Server Board Families S2600CW, S2600KP, S2600TP, and S2600WT may allow a privileged user to potentially enable escalation of privilege via local access.
CVE-2020-12301
PUBLISHED: 2020-08-13
Improper initialization in BIOS firmware for Intel(R) Server Board Families S2600ST, S2600BP and S2600WF may allow a privileged user to potentially enable escalation of privilege via local access.
CVE-2020-7307
PUBLISHED: 2020-08-13
Unprotected Storage of Credentials vulnerability in McAfee Data Loss Prevention (DLP) for Mac prior to 11.5.2 allows local users to gain access to the RiskDB username and password via unprotected log files containing plain text credentials.
CVE-2020-8679
PUBLISHED: 2020-08-13
Out-of-bounds write in Kernel Mode Driver for some Intel(R) Graphics Drivers before version 26.20.100.7755 may allow an authenticated user to potentially enable denial of service via local access.