Q

SAN speed and server accommodation

I'm a student at Prince George's Community College and I want to know what the top speed is for a SAN and how many...

servers can a SAN accommodate at one time.


Today, the current shipping speed for a Fibre Channel-based SAN products is 2-gigabits per port that is 200 MB per second. Max throughput after overhead is a bit less, and depends on the Host Bus Adapter, switch, OS and driver used. 4-gigabit and 10-gigabit connections are on the horizon.

The maximum connectivity is around 239 switches (domains) although I have yet to see a single fabric that large. Most large SANs are broken down into smaller physical or virtual, if the switch supports it) fabrics. The switches can be smaller 16-port switches or director class switches that can have over 200 ports each. You can do the math on max connectivity from there. It's in the thousands but for traffic and error isolation, fewer connections should be used. Sixteen switches in a single fabric seems to be a good rule of thumb. Using a core edge design, you can add more switches and still keep the hop count quite low especially when director class switches are used as the core.

Chris

Editor's note: Do you agree with this expert's response? If you have more to share, post it in one of our .bphAaR2qhqA^0@/searchstorage>discussion forums.


This was first published in September 2003

Dig Deeper on Fibre Channel (FC) SAN

PRO+

Content

Find more PRO+ content and other member only offers, here.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

SearchSolidStateStorage

  • Tintri VMstore T5000

    Like all of its VM-aware storage systems, Tintri’s first all-flash array -- the Tintri VMstore T5000 -- allows admins to bypass ...

  • SolidFire SF9605

    The high-capacity SolidFire SF9605 uses SolidFire’s Element OS 8 (Oxygen) to deliver new enterprise features such as synchronous ...

  • HPE 3PAR StoreServ 20850

    HPE 3PAR StoreServ 20850 holds 1,024 solid-state drives (SSDs). Hewlett Packard Enterprise claims it can deliver more than three ...

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

  • Asigra Cloud Backup Version 13

    Asigra Cloud Backup Version 13 provides an AWS Elastic Block Store Snapshot Manager and the ability to support Docker container ...

  • Veeam Availability Suite v8

    Veeam Availability Suite v8 offers several key backup software components in one package, including Veeam Cloud Connect, Snapshot...

  • Druva inSync 5.5

    Druva inSync 5.5 endpoint backup software stands out with its proactive compliance, cloud app integration, full text search and ...

Close