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Windows Server 2008
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HP ProLiant ML115 Server series - HP ProLiant ML Servers
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Q&A

The powerfully simple HP server trusted by value-conscious small businesses.

Questions

General ProLiant Q&As (pdf)
General
1. What is the general difference between the new ProLiant ML115 and the ML110 G4?
2. Why should I buy a ML115 instead of using a desktop PC as a server?
3. How does the HP ProLiant ML/DL 100 series compare to the HP ProLiant ML/DL 300 series?
4. How can HP offer such a competitive price point?
5. What is the HP Lights-Out 100 Remote Management Card?
Processors and memory
1. How do the processor offering on ML115 differ from ML110 G4?
2. How do the memory offering on the ML115 differ from ML110 G4?
3. What is ECC memory?
4. Why do I need four memory slots?
Options
1. What new product specific options are available for the ProLiant ML115 server?
2. How does USB booting compare to floppy?
3. What is PCI-Express and why is it important?
4. PCI-X slot is not available with ML115, what do I do with options with PCI-X interface?
5. Does the ML115 support an Uninterrupted Power System option?
Storage
1. What is RAID? Why do I need it?
2. Why should I buy a RAID array controller?
3. What other storage options are available for the ML115?
4. Does the ML115 support hot-plug hard disk drives?
Service and warranty
1. What is the warranty on this product?
2. What Service offerings are recommended?

Answers

General
Q1. What is the general difference between the new ProLiant ML115 and the ML110 G4?
A1. The ML115 utilizes AMD Opteron and Athlon processors vs the ML110 G4 Intel® Pentium and Celeron® processors. The ML110 G4 only offers SATA RAID 0,1 from the system board controller, the ML115 offers SATA RAID 0,1,5 from the embedded system board controller. The ML115 and ML110 G4 both have four I/O slots, however the ML115 offers x8 & x16 vs. x4 & x8.
 
Q2. Why should I buy a ML115 instead of using a desktop PC as a server?
A2. There are several important differences between the ML115 and a desktop PC for server deployment. First, the ProLiant ML115 uses a chipset that is designed specifically for server applications. The chipset is stress tested for ECC memory support, a critical feature for server dependability. Second, the ML115 was specifically designed for and rigorously tested with server applications in demanding server configurations. This testing cycle ensures optimal performance and dependability when deployed as a server. Finally, the ML115 is packaged in an ergonomic chassis that makes typical server hardware configuration changes simple. By not including expensive graphics or sound cards found in desktop PCs the ML115 is able to offer true server functionality at an equivalent desktop PC price.
 
Q3. How does the HP ProLiant ML/DL 100 series compare to the HP ProLiant ML/DL 300 series?
A3. The HP ProLiant ML/DL 100 series is the entry-level of the ProLiant server line designed to deliver appropriate technology to specific market segments. The 100 series will offer a limited suite of options and leverage the various operating system enabled manageability features. The ProLiant 100 series is optimized for small / medium businesses running small business applications and enterprises running high performance technical computing solutions.
 
Q4. How can HP offer such a competitive price point?
A4. The HP ProLiant 100 server series leverages the priorities on which ProLiant was built, reliability and performance, and has specifically targeted these servers to incorporate features for the targeted customer usage such as small / medium businesses and high performance computing. Focus on design provides a much more simplified server with the right features, limiting the cost burdened to the server and qualification process. The new 100 server series designs have tailored features that closely reflect their usage needs and the addition of qualified third-party configuration vendors to enable a simpler, more affordable solution.
 
Q5. What is the HP Lights-Out 100c Remote Management Card?
A5. HP introduces HP Lights-Out 100c Remote Management providing entry level remote management capabilities for ProLiant ML100 Series servers. HP Lights-Out 100c, when the option card is installed, allows customers or their service providers to remotely manage ProLiant 100 Series servers over a LAN or the Internet.

For further information on the HP Lights-Out 100 Remote Management option see Lights-Out 100 Remote Management Card
 
Processors and memory
Q1. How do the processor offering on ML115 differ from ML110 G4?
A1. The ML115 introduces AMD Opteron and Athlon processors to the HP ProLiant 100 series. These processors offer true server technology; validated, built-in ECC memory protection; Direct Connect Architecture with integrated memory controller, and Multi-Core Processor Technology.
 
Q2. How do the memory offering on the ML115 differ from ML110 G4?
A2. The memory offering on the ML115 server is the same as the ML110 G4: PC2-5300. As in the ML110 G4, the standard memory offering is 512 MB with a maximum of 8 GB.
 
Q3. What is ECC memory?
A3. ECC memory, or Error checking and Correcting memory, helps protect your server from failure due to errors in the transfer of data to and from the memory. Unlike standard memory, ECC memory can actually detect and correct single-bit errors. With standard memory if even a single-bit memory error occurs, your server stops functioning.
 
Q4. Why do I need four memory slots?
A4. Having four memory slots most likely enables systems to accommodate more total memory than a two or three slot solution. Additionally, having up to 3 open slots allows users to add memory incrementally, growing only as fast as it is necessary. Most importantly for cost-sensitive small businesses, having four slots accommodates large memory configurations without using extremely expensive high density DIMMs. For example, loading 2GB in 2 slots costs $3,000-$4,000 more than loading 2GB in four lots (2×1 GB DIMMs vs. 4×512MB DIMMs).
 
Options
Q1. What new product specific options are available for the ProLiant ML115 server?
A1. There is only one main new product specific options for the ML115. It is the following:
  • Lights-Out 100 Remote Management Card
Please review the ML115 QuickSpecs.
 
Q2. How does USB booting compare to floppy?
A2. USB 2.0 offers a fast interface for low speed peripheral devices - including storage devices. USB drive keys support large data capacities. Available capacities on USB disk keys can support anywhere from 16 to 300 times more capacity than a 1.44 MB floppy disk. ML110 G4 comes without floppy, but offers either USB drive key options in 512 MB or 1 GB, as well as an External USB Floppy disk drive kit.
 
Q3. What is PCI-Express and why is it important?
A3. PCI Express is the latest serial transmission interface for I/O slots. With transmission rate requirements rising and interfaces moving towards serial, PCI slot is no exception. Within the transition period, HP is keeping 2 legendary PCI 32-bit slot and offering the new PCI Express slot in the ML115 to provide customers the flexibility of different types of existing on hand options, or any new option cards you may need to implement. By offering the x8 and x16 form factor PCI Express slot on ML115, SMB customers now has the flexibility in choosing the most suitable I/O options today for their server.
 
Q4. PCI-X slot is not available with ML115, what do I do with options with PCI-X interface?
A4. Although options offered on the ML115 list, especially some of the controller cards seemed to be PCI-X interface. The 2 embedded 32bit/33MHz 3.3V PCI slots really is capable of taking the PCI-X controllers qualified. You can rest easy using the qualified options. For a list of options, please refer to ML115 QuickSpecs.
 
Q5. Does the ML115 support an Uninterrupted Power System option?
A5. Yes, a UPS option has been tested and is available for the ML115. Currently, HP supports the usage of an HP T750 or T1000 UPS for the ML115.
 
Storage
Q1. What is RAID? Why do I need it?
A1. RAID stands for Redundant Array Of Independent Disks and is a way of storing data across several different hard disks. By placing data on multiple disks, read/write operations can overlap, improving performance. Many RAID configurations also provide data redundancy increasing the fault tolerance of the system. A RAID appears to the operating system to be a single logical hard disk. RAID employs the technique of striping, which involves partitioning each drive's storage space into units ranging from a sector (512 bytes) up to several megabytes. The stripes of all the disks are interleaved and addressed in order. RAID is typically used for increased data integrity and better performance. Optional RAID cards for both SATA as well as SAS are available on the ML115.
 
Q2. Why should I buy a RAID array controller?
A2. There are many benefits to using a RAID array controller in a server, but the primary benefits fall into 2 main categories: improved data integrity and higher performance.

Data Integrity: Using a RAID controller, you can choose to mirror data (RAID 1) across 2 hard drive or to spray that data across 3 or more hard drives (RAID 5). In both cases, if a hard drive fails, then the data will not be lost. Once the failed hard drive is replaced, then the RAID controller can re-build the array and once again ensure the integrity of that data.

Performance: Using a RAID controller, you can choose to spray data across three or more drives either in a non-secure manner (RAID 0), meaning that if a drive fails then data will be lost, or in a secure manner (RAID 5), meaning that if a drive fails then no data will be lost. Both RAID 0 and RAID 5 lead improved performance of the hard-drive subsystem over standard straight drive controllers (without RAID). This performance benefit can be as much as 30% improvement or more over straight drive controllers.
 
Q3. What other storage options are available for the ML115?
A3. Additional storage options for the ML115 are:
  • A DVD- RW option, which is available for simple storage back up
  • Two front, two inside, and two rear USB 2.0 ports, which are available to replace to USB drive keys, external USB floppy, external disk to disk solutions, and HP USB tape drives.
 
Q4. Does the ML115 support hot-plug hard disk drives?
A4. No, the ML115 does not support hot-plug hard disk drives. Utilizing a non hot plug solution helps HP to offer the highest value solution to SMB customers. If a Hot Plug hard disk drive is desired, please consider the ProLiant ML310 G4 for your solution.
 
Service and warranty
Q1. What is the warranty on this product?
A1. The ML115 is supported with a Worldwide Limited Warranty featuring 1-year of parts, labor, and on-site service.

Please see the ML115 QuickSpecs on the product's web site.
 
Q2. What Service offerings are recommended?
A2. A full range of hardware and software support offerings are available ranging from installation services to 7/24 on-site repair coverage. HP recommends 4 hour same day response and software technical support to maximize uptime, improve system performance, and increase the productivity of system managers/operators. Click for a complete listing of response and service offers.
 
*Except where noted, all prices are estimated U.S. HP prices. Actual prices from other locations or websites may vary.

** Leasing information, where displayed, is for a 48-month lease. Call 1-800-888-5858 to talk to a representative about leasing options to meet your needs. Shipping and tax not included. Details
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