W2K2 Will Have 'Snapshot' Built-In
ENT has an interesting article about Snapshot technology. Here are three paragraphs, and at the end if a link to the full article. "Backup and recovery is an essential function for mission critical systems, so it is ironic that backup and recovery software is difficult to certify for Microsoft's platform for mission critical systems, Windows 2000 Datacenter Server. Microsoft intends to address this issue in its next release of the Windows operating system, Whistler.
Whistler will have native functionality that enables administrators to take "snapshots," a copy of system settings and information at a single moment in time, then send the snapshots to third-party back up and recovery software for storage on tape or other backup media.
Snapshots provide a point in time view of a machine, to simplify
and accelerate backup and recovery. The snapshot routine briefly
freezes the I/O of a machine, flushes the memory, then "takes a
picture" of the system's status at that moment. A third-party writer can then begin to back up the system based on the snapshot. Snapshots allows administrators to backup machines without taking them offline and can improve the reliability of backups.
Lots Of Cool Stuff -- Nothing To Do With Windows ;-)
OK, once a year I pick the 10 cool gadgets that I personally like the best. I'm reading tons of IT magazines and then a bunch of other mags so I decided to get you the 10 goodies that I think might be fun for all of you. Here are my faves, and their links. (which we redirect so we can count which ones you like best). Why? That is for the moment a mystery that I'll explain later but you just might benefit from it. Don't ask just yet! [grin]
1) New digital camera from Hitachi that replaced the tape with
an editable DVD of an hour. You can edit right on the camera, and
the disks play on many (not all) home DVD boxes. The camera is the DZ-MV100. Cost is around $2,000. Link to Hitachi Website & specs:
2) It's a phone. It's an MP3 player. Plus a whole lot more. The
Samsung Uproar is a dual-band Sprint PCS Phone that has a built-
in MP3 player with 64 MB of memory. That's enough for over an hour's worth of music. SRP is $399. Check out all the features:
3) It's a phone *and* a PDA integrated into one device. The TP3000 is a phone with a built-in speakerphone, synchs with Outlook, Web access, and voice activated dialing. The flip-up PDA has all the stuff you'd expect in any PDA. SRP is same as above: $399.
4) The nomad jukebox looks like a portable CD-player but in reality has a 6-Gig hard drive that holds about 100 hours (about 150 albums) of MP3. Something else than these small flash-memory based players! Suggested Retail Price for this puppy: $499.99. Press Release here:
5) The Fuji FinePix beats the $#!+ out of other much more expensive digital still cameras with a whopping 3.4 megapixels, and is an MP3 player / voice recorder at the same time. Cost? only $699. Release:
6) Live small? Here's a "MicroPlex" for you. The Panasonic mini DVD theater gives you a player, TV receiver and 15.2 inch flatscreen. You can even hook up cable so can zap channels to your heart's delight. Cost: a round 2 grand. This is so new the Panasonic website is not up to date yet, here are its smaller sisters and brothers to give you the idea:
7) Your own Quiet Zone. Travel a lot? Here's a BOSE noise canceling headphone set that of course also plays music. It's got a microphone that picks up ambient noise and cancels it. Great for flights as it fits in the jacks of your airplane seat. Suggested Retail: $299
8) Casio has a cool new watch that has a camera in it. I ran into
this cutie when I was in the Paris Charles de Gaulle airport and
needed to kill some time. It's always ready to capture events when they occur. You can transfer shots to your PC so you can email them. This Christmas present for yourself is just $229.95. Specs & video:
9) No chance getting lost with the Geode Module on your Visor PDA. You can download city maps and this GPS unit tracks where you are. There are even local events and an entertainment guide that tells you what's goin' on around the corner. Suggested Retail Price: $249
10) By far the most esthetic computer speakers and subwoofer. The
HK Soundsticks are head and shoulders over any other audio gear from a visual perspective. The transparent ones are only for Apple but the PC ones are the next best alternative. SRP: $199. Specs at:
Enhancing Windows 2000 Disk Subsystem Performance
Super Speed RAM Disk
No matter how well you sized and tuned your Windows 2000 disk
subsystem, the disk subsystem is still composed of physical
devices that are slow when compared to RAM. So what can you
do if you need really fast I/O or want to remove a specific
hot disk bottleneck? Consider using a RAM disk. A RAM disk can
be configured using the Super Speed software, which enables you
to configure part of Windows 2000's memory subsystem to appear
as a disk drive to your applications.
How much performance improvement might you expect when using RAM
disk technology? To address this question, a series of enchmarks
were run to see what performance gains (or not) were possible on
a Compaq 6400R with Dual 550MHz CPUs and a size disk RAID 5 array. Performance improvements provided by the RAM disk are dramatic!
Ok, not a big surprise, but what is more important than the
specific throughput values reported are the relative performance
differences between using the RAM disk and a traditional a six RAID 5 disk array. For the sequential read intensive environment, the RAM disk provides over 2 times the performance of a six disk RAID 5 array (53Mb/sec), over 8 times the performance in the random read environment (40Mb/sec), and over 7 times the performance in a write intensive environment (80Mb/sec). You can make your own decision of whether the additional cost of the extra RAM for use as a RAM disk is justified by the increase in performance.
Using a RAM disk to improve disk subsystem performance is not a
replacement for utilizing sound availability, tuning and sizing
techniques for the rest of your disk subsystem. It does, however, provide a strong ally to add to your arsenal of tuning techniques.
This is an extract from a book by Curt Aubley, Author of
Tuning And Sizing Windows 2000 for Maximum Performance,
Prentice Hall-Dec. 2000
To try a RAM disk on your own system, download from here: