另外我還發現了一個英倫汽車設計的共同點就是它們的鬼面罩都來的很吸引人，有些兇惡得像要咬人如Aston Martin、有些則雍容華貴如Roll Royce和Bentley、還有些大方得體如Jaguar系列、也有好些很可愛的如MGA和Mini。總之令人看過一眼後，就會像著魔般Fall in Love with British Design!
臨踏出場前，發現還有一台被人遺忘了的Jaguar銀色XJ-S開篷版，最近Autoart不剛剛推出這個80年代的系列嗎﹖要不是AA近來把歐洲紅色跑車都調得偏橙色，我一定會收進一台的。在此衷心期望AA即將發行的Jaguar E-Type SERIES I 3.8紅色開篷版一定要終於原廠的British Red才好啊，千萬別又給搞砸了!
One of my clients requires W2K3 with MSSQL 2005 and .NET 4 as well as Silverlight4, so I started to deploy the VM from Windows Server 2003 Standard SP2 template, the template itself is configured with the most basic features, there is no IIS or .NET components.
I’ve encountered a few problems that really surprised me:
When I installed IIS, it asked me for both the Windows Server 2003 and SP2 CD-ROM (it never did if I use a W2K3 without SP2), where do I get that SP2 CD huh? After a while, I figured out the solution is simply to extract the files from the SP2 zip then it completes the whole IIS installation.
Then I encounter another problem when installing SQL Server 2005, the installation failed with error code 1063, Google helped me again, the solution is to install .NET 2.0 first as SQL Server installation files depends on this foundation.
I just found out “Reality” (by Richard Sanderson), one of my favorite songs of the 80s is actually from a 1980’s French movie “La Boum”, and Guess What? That little girl (14 years old) in the movie is Sophie Marceau later we all know who she is.
After playing with Head YOUTEK IG Extreme Pro almost 3 weeks, I’ve decided it’s time for me to get an extra stick for spare in case my 1st one broke as Head YOUTEK IG Extreme Pro is famous for eating strings.
It came to my attention someone has posted a 99.9% new IG Extreme Pro in a local tennis forum, so I contacted the seller directly and bought it without hesitation at almost 30% off the original price.
One of the most important reasons is because I do need an original Grip 3 IG Extreme Pro.
Originally I was thinking selling the original Grip 2 at the same tennis forum, and there was actually a NO Brain approached me asking for 50% off, then I found out it’s very easy to change the grip to a Grip 3 at a pro-shop, even better, I simply put an over grip on the of the Grip 2 solved the problem with $40.
After receiving the racket, I couldn’t be happier, as I found out it’s almost new, even newer than my 1st one, absolutely no scratch on the bumper that makes me wonder if the previous owner actually went to court and hit the balls.
Then it’s the perfect Grip 3, I can feel it’s even a bit smaller than my DIY Grip 3.
Anyway, I do hope the pair will last for a long long time, probably another 20 years just like my beloved POG. Well, it may not be a good news for local pro-shop though.
I’ve asked Equallogic Support the following question today, it turns out I had wrong understanding about RAID10 before.
Client enviornment is running VMWare using EQL PS6000XV, 16 15K RPM disks (ie, 14 disks + 2 hot-spares)
In RAID10, there are 7 spindles as RAID10 only ultilizes half the disks, so there are only 7 spindles producing the atual IOPS.
In RAID50, all 14 spindles are used.
I/O pattern is mostly random (30% Read, 70% Write)
Does this mean in this case RAID50 is faster than RAID10 in terms of IOPS as there are 14 spindles in RAID50 compares to 7 spindles RAID10?
Reply from Equallogic’s US Support
The thing to remember here is that with RAID10 it will make two writes, one to each disk.
With RAID50, it will need to make the read/write/parity to all of the member disks in the raidset.
With Read/Write sequential IO, the difference would be minimal. With an environment as you described (virtual environment) where there are many small random I/Os, RAID10 will be quicker.
RAID10 will also be quicker if a drive fails whereas the performance with RAID5/50 is poor when the raidset is degraded and a rebuild is going on.
And of course, the space issue when considering RAID10 or RAID50 is a huge consideration
Then, I got an even better answer from a Dell storage expert in Hong Kong
Actually spindle in RAID10 is still 14, not 7; 7 is the capacity oriented view. We still consider using all disks during I/O.
But you may notice that above chart didn’t mention for Read performance? And yes, read performance for RAID 10 and RAID 50 or even RAID-5 will almost the same! The different will mainly focus on write.
RAID 50 is two RAID-5 and stripe, the RAID parity overhead will still exist across the disks; the more disks you have in the RAID group, the more overhead and performance penalty you have!
In RAID 10, every RAID group consists with two disks only, so overhead and performance penalty is minimum.
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