NEW YORK (

TheStreet

) --

EMC

(EMC)

is buying Seattle-based

Isilon Networks

(ISLN)

for $2.25 billion, the company announced Monday. EMC, the biggest maker of storage computers, will gain video storage equipment through

the acquisition

.

Shares of Isilon climbed 29% in pre-market trading Monday to $33.95.

Cisco

(CSCO) - Get Report

said Friday it has hired former

Apple

(AAPL) - Get Report

executive Mark Papermaster as vice president of its silicon switching technology group. Papermaster, who was formerly in charge of iPhone engineering, left Apple after the

Antennagate controversy

.

Shares of Cisco rose 0.65% in pre-market trading Monday to $20.28.

Facebook

is expected Monday to announce a new e-mail service in which people will receive e-mail addresses with the "facebook.com" suffix. Facebook already offers an instant messaging service that allows its members to communicate privately.

Meanwhile,

AOL

(AOL)

unveiled a new webmail app this weekend that allows users to import messages from other e-mail services like

Google's

(GOOG) - Get Report

Gmail and

Yahoo!

(YHOO)

Mail. Currently in beta mode, the full launch of AOL's email service is expected sometime next year.

New York-based startup

Tumblr

has secured a large funding round from Sequoia Capital, according to a report from

Business Insider

. Tumblr, a popular microblogging platform, has already raised around $10 million in four rounds.

--Written by Olivia Oran in New York.

>To follow the writer on Twitter, go to

http://twitter.com/Ozoran

.

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.