| Q1. |
Why should I buy an XP24000/XP20000 over a mid-range array? |
| A1. |
If you demand the following, then the XP24000/XP20000 is the array of choice:
Constant Uptime(when ANY downtime is NOT an option):
- Large consolidation situations demand constant uptime on the array
- Applications where there is “zero-tolerance” allowed for planned or unplanned downtime (e.g., stock exchanges, banking, telcos, manufacturing, retailing, etc.)
Advanced 3 site disaster recovery solutions:
- Implementation of the XP24000/XP20000 3DC solution combines the data consistency of synchronous replication and the long-distance capability of journal replication to protect against local and wide-area disasters.
Compatible with ALL major operating systems, including NonStop servers & mainframes
Data Center storage consolidation:
- Mixture of hosts is either a number of large servers or a very large number of smaller servers (20-100+)
- Large number of Host/SAN connections are desired
Storage expertise and services:
- Looking for more complex Mission Critical Services
- Want to control array configuration
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| Q2. |
What is the difference between the XP24000 and XP12000 disk array? |
| A2. |
The XP24000 was designed with specific changes to increase performance.
- 4 Gbps bandwidth End-to-End
- Fourth Generation Crossbar Switch Backplane
- Faster Microprocessors in the channel adapters and disk adapters pairs
- Portions of the firmware have been re-architected to improve performance
The XP’s dynamic partitioning capability has been bundled into the XP Array Manager Software at no extra charge on the XP24000.
The maximum amount of external storage that can be virtualized by the XP24000 increased to 247 PB over the XP12000 maximum of 32 PB.
The XP24000 supports Thin Provisioning. The XP12000 does not.
The maximum number of logical unit numbers (LUNs)/logical devices (LDEVs) for open systems increased from 16K to 64K.
The XP24000 supports 16K XP Business Copy pairs (the XP12000 supports 8K pairs)
The XP24000 supports 32K XP Continuous Access pairs (the XP12000 supports 16K pairs)
Maximum configurable Cache Memory on the XP24000 is 512 GB (up from 256 GB on the XP12000).
Maximum configurable Shared Memory size is 24 GB (up from 12 GB on the XP12000). The increase in the amount of Shared Memory that can be configured in an XP24000 enables a larger number of copy pairs to be supported.
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| Q3. |
What is the difference between the XP20000 and XP10000 disk array? |
| A3. |
The XP20000 was designed with specific changes to increase performance.
- 4 Gbps bandwidth End-to-End
- Fourth Generation Crossbar Switch Backplane
- Faster Microprocessors in the channel adapters and disk adapters pairs
- Portions of the firmware have been re-architected to improve performance
The XP’s dynamic partitioning capability has been bundled into the XP Array Manager Software at no extra charge on the XP20000.
The maximum amount of external storage that can be virtualized by the XP20000 increased to 96 PB over the XP10000 maximum of 16 PB.
The XP20000 supports Thin Provisioning. The XP10000 does not.
The maximum number of logical unit numbers (LUNs)/logical devices (LDEVs) for open systems increased from 16K to 64K.
Maximum configurable Cache Memory on the XP20000 is 128 GB (up from 64 GB on the XP10000).
Maximum configurable Shared Memory size is 14 GB (up from 6 GB on the XP12000). The increase in the amount of Shared Memory that can be configured in an XP20000 enables a larger number of copy pairs to be supported.
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| Q4. |
Who installs and configures my new XP24000/XP20000 disk array? |
| A4. |
HP Global Services perform the physical installation of XP24000/XP20000 components. The experience and expertise of the HP Global Services professional ensures a supportable hardware configuration and assures that the factory warranty attached to the XP24000/XP20000 components will be honored in future service calls.
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| Q5. |
What is the HP Network Attached Storage (NAS) solution for XP24000/XP20000? |
| A5. |
HP recommends the HP Enterprise File Server Cluster Gateway solution for enterprise file serving applications with the XP. The combination of the EFS Cluster Gateway solution provides outstanding scalability and performance with extreme reliability and availability. Configurable to support both NFS and CIFS file serving needs, the Cluster Gateway allows use of consolidated storage on the XP disk array. Coupled with XP Thin Provisioning, the Clustered Gateway NAS solution provides a cost effective flexible solution for enterprise file serving needs.
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| Q6. |
What is the difference between the SATA disk drives and the Fibre Channel disk drives and how should each be used in an XP? |
| A6. |
SATA drives offer a higher capacity/lower cost per gigabyte option compared to the FC disk drives. However, where the FC drives should be used in mission-critical, high input/output workload environments, the SATA drives are designed for non-mission critical, lower duty cycle applications that are “near on-line” or infrequently accessed. The SATA drives address the need for businesses to cost-effectively store infrequently accessed information in a more economical fashion and with performance that is faster than traditional tape. |
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