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Home > Archive > Server + > November 2002 > Random Server+ QotD
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Random Server+ QotD
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| namrak 2002-11-13, 8:07 pm |
| Its been awhile, but here's a question to see if the resident Server+ folks are staying sharp. 
Percy has just hired on as a consultant at WeServe Unlimited. His company has just given him his first job, which is to help a client, MacDonald's, set up a new onsite server. This server will house roughly 35GB of crucial advertising data (graphics, ads, slogans, etc.). The server must utilize duplexing, maintain high availability and fault tolerance, while keeping costs limited to the essential hardware to implement the configuration. Management also mentions that the crucial data is not expected to change much as the sales team is happy with their development efforts so far.
Which of the following option would Percy suggest that best meets MacDonad's management criteria for the server?
A) Employ a hardware RAID 0 configuration using two disk controllers and two 40GB drives along with an online UPS
B) Employ a hardware RAID 1 configuration using two disk controllers and two 60GB drives with an online UPS
C) Employ a hardware RAID 3 configuration using a single disk controller and two 40GB drives with an online UPS
D) Employ a hardware RAID 5 configuration using a single disk controller and three 60GB
drives with a standby UPS
E) Employ a software RAID 1 configuration spanning two 40GB drives with a standby UPS
F) Ask MacDonald's management if they want to supersize that order!  | |
| Supertech 2002-11-13, 10:15 pm |
| NOT A) no fault tolerance.
B) That's it! This provides fault tolerance for the controller in the event that the failure is on the adapter rather than the drive. If the data path of the disk subsystem is heavily saturated, then duplexing can provide for a moderate performance gain over mirroring
NOT C) RAID 3 requires at least 3 drives.
My second choice is Dee because RAID 5 will provide fault tolerance and provide adequate drive space. (online/standy UPS?) UPS is UPS.
NOT E) Software RAID will not give performance of a hardware solution and this configuration leaves precious little disk capacity to spare.
...you talkin' to me? I'm the only one standin' here... | |
| twister166 2002-11-13, 10:40 pm |
| If duplexing, then 2 controller cards are required, I think you can use mirrow duplex... damn it has been soooo long now... I think it is B... | |
| namrak 2002-11-14, 2:04 pm |
| Lets see if we can't find anymore candidates to bite on this question before handing out the answer.  | |
| Shiryu 2002-11-14, 2:20 pm |
| B. | |
| namrak 2002-11-14, 10:51 pm |
| quote:
Originally posted by namrak
Its been awhile, but here's a question to see if the resident Server+ folks are staying sharp.
Percy has just hired on as a consultant at WeServe Unlimited. His company has just given him his first job, which is to help a client, MacDonald's, set up a new onsite server. This server will house roughly 35GB of crucial advertising data (graphics, ads, slogans, etc.). The server must utilize duplexing, maintain high availability and fault tolerance, while keeping costs limited to the essential hardware to implement the configuration. Management also mentions that the crucial data is not expected to change much as the sales team is happy with their development efforts so far.
Which of the following option would Percy suggest that best meets MacDonad's management criteria for the server?
A) Employ a hardware RAID 0 configuration using two disk controllers and two 40GB drives along with an online UPS
B) Employ a hardware RAID 1 configuration using two disk controllers and two 60GB drives with an online UPS
C) Employ a hardware RAID 3 configuration using a single disk controller and two 40GB drives with an online UPS
D) Employ a hardware RAID 5 configuration using a single disk controller and three 60GB
drives with a standby UPS
E) Employ a software RAID 1 configuration spanning two 40GB drives with a standby UPS
F) Ask MacDonald's management if they want to supersize that order!
And the answer is...(B)
In order to meet the requested requirements two physical disk controllers will be needed to implement duplexing and provides greater redundancy. This removes one more point of failure as opposed to have only one disk controller.
The RAID 5 configuration would also be another possibility, but since performance was never mentioned in the equation and keeping costs limited to running an effective implementation, answer (D) would be more costlier than B's configuration. |
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