HP 2000fc manual Scalability, LUNs, Performance

QuickSpecs

HP StorageWorks 2000fc G2 Modular Smart Array

Family Information

Scalability	The MSA2300fc G2 controller is designed to allow an installation to begin
	with smaller capacity and be able to grow gradually as needed. The flexibility
	of SAS or SATA drive technology, form factors, sizes, speeds, and costs per GB
	allows a system to easily fit in almost any budget.
	Large Form Factor configurations can scale up to 5.4 TB SAS or 12 TB
	SATA, expandable to 27 TB SAS or 60 TB SATA with the addition of a
	maximum of four MSA2000 3.5-inch Drive Enclosures.
	Small Form Factor configurations can scale from 3.5 TB SAS or 6 TB
	SATA. With the addition of three MSA70 JBODs, the MSA2324fc G2
	can support 14.4 TB SAS or 24.7 TB SATA.
	Users may configure a 24-drive MSA2324fc G2 SFF array head with up
	to three 12-drive LFF MSA2000 3.5-inch disk enclosures. This is an
	excellent method for a configuration that support fast SFF enterprise-
	class SAS drives in the array head, combined with economical LFF drives
	staged for archival purposes, all in the same array.
	Qualification of larger capacity drives is ongoing.
LUNs	The MSA2000 family of arrays supports 512 LUNs (total volumes in a dual
	controller system) and LUN sizes up to 16 TB. The array supports expansion
	and deletion of any LUN.
RAID 0, 1, 3, 5, 6, 10, In addition to the usual RAID levels, the MSA2000 family features several
50	important additional levels. RAID 6 is the highest level of RAID protection. It
	allocates two sets of parity data across drives and allows simultaneous write
	operations. It can withstand two simultaneous drive failures without downtime
	or data loss. RAID 10 is mirroring and striping without parity. It is the most
	popular of the multiple RAID levels, allowing large arrays with high
	performance in most cases and superior fault tolerance. RAID 50 combines
	the block striping and parity of RAID 5 with the straight block striping of RAID
	0, yielding higher performance than RAID 5 through the addition of RAID 0,
	particularly during writes.
Performance	Performance numbers are a guideline as established by tests in a lab
	environment. 96 72 GB 15K SAS drives were used in dual controller
	configurations of eight 12 Disk vdisks, eight 806 GB volumes, and two
	volumes per host.

Number and type of applications along with the number of hosts will affect overall performance.

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