HP Z840 Maintenance and Service Guide - Page 117

Supported RAID configurations, The following RAID

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Supported RAID configurations All workstation platforms have the following controllers: ● LSI 2308 controllers - HP Z840 Workstations ● LSI 9217-4i4e controllers - HP Z440 and Z640 Workstations (optional) ● LSI 9270-8i controllers - HP Z440, Z640, and Z840 Workstations (optional) The following RAID configurations are supported: Configuration RAID 0 Integrated striped disk array RAID 1 Mirrored disk array RAID 5 Striped disk array with distributed parity RAID 10 Striped and mirrored disk array RAID 1E Two-way mirroring Description Controllers ● Requires a minimum of two drives. ● Provides improved I/O performance. ● Provides no fault tolerance. ● Loses all data if any disk in the array fails. ● Increases disk performance. ● Intel with RSTe ● LSI 2308 ● LSI 9217-4i4e ● LSI 9270-8i ● Supports a maximum of two drives. ● Intel with RSTe ● Provides 100% redundancy: all data from one drive ● LSI 2308 is duplicated on a second drive. ● LSI 9217-4i4e ● Recovers from a single-drive failure. ● LSI 9270-8i ● Serves as a good entry-level redundant system. ● Supports three or more drives. ● Intel with RSTe ● Provides fault tolerance and I/O performance improvement, especially for write-biased applications. ● LSI 9270-8i ● Retains all data if a single drive fails, but performance is compromised and data loss is possible if a second drive fails until the failed drive is replaced and the array rebuilt. ● Supports four or more drives. ● Requires an even number of drives. ● Provides excellent performance. ● Uses several drives to stripe data, then copies the striped drives to provide redundancy. ● Offers high data transfer of striped arrays and provides increased data accessibility (reads). ● Intel with RSTe ● LSI 2308 ● LSI 9217-4i4e ● LSI 9270-8i ● Provides benefits comparable to RAID 10. ● Requires an odd number of drives. ● Requires a minimum of three drives. ● Delivers improved read performance. ● LSI 2308 ● LSI 9217-4i4e Supported RAID configurations 107

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Supported RAID
configurations
All workstation platforms have the following controllers:
●
LSI 2308 controllers — HP Z840 Workstations
●
LSI 9217-4i4e controllers — HP Z440 and Z640 Workstations (optional)
●
LSI 9270-8i controllers — HP Z440, Z640, and Z840 Workstations (optional)
The following RAID
configurations
are supported:
Configuration
Description
Controllers
RAID 0
Integrated striped disk
array
●
Requires a minimum of two drives.
●
Provides improved I/O performance.
●
Provides no fault tolerance.
●
Loses all data if any disk in the array fails.
●
Increases disk performance.
●
Intel with RSTe
●
LSI 2308
●
LSI 9217-4i4e
●
LSI 9270-8i
RAID 1
Mirrored disk array
●
Supports a maximum of two drives.
●
Provides 100% redundancy: all data from one drive
is duplicated on a second drive.
●
Recovers from a single-drive failure.
●
Serves as a good entry-level redundant system.
●
Intel with RSTe
●
LSI 2308
●
LSI 9217-4i4e
●
LSI 9270-8i
RAID 5
Striped disk array with
distributed parity
●
Supports three or more drives.
●
Provides fault tolerance and I/O performance
improvement, especially for write-biased
applications.
●
Retains all data if a single drive fails, but
performance is compromised and data loss is
possible if a second drive fails until the failed drive
is replaced and the array rebuilt.
●
Intel with RSTe
●
LSI 9270-8i
RAID 10
Striped and mirrored
disk array
●
Supports four or more drives.
●
Requires an even number of drives.
●
Provides excellent performance.
●
Uses several drives to stripe data, then copies the
striped drives to provide redundancy.
●
Offers
high data transfer of striped arrays and
provides increased data accessibility (reads).
●
Intel with RSTe
●
LSI 2308
●
LSI 9217-4i4e
●
LSI 9270-8i
RAID 1E
Two-way mirroring
●
Provides
benefits
comparable to RAID 10.
●
Requires an odd number of drives.
●
Requires a minimum of three drives.
●
Delivers improved read performance.
●
LSI 2308
●
LSI 9217-4i4e
Supported RAID
configurations
107