HP MODULAR SMART ARRAY 2000 SA G2 - Manual (Page 7)

SAS drive performance can be approximately 30% greater than SATA
performance on sequential host IO. SAS performance excels in
sequential lower latency response time and random IO per second
transaction performance due to higher rpm disk speeds yielding lower
seek times.
NOTE: MSA2 3.5" Large Form Factor (LFF) drives are for use only in
the MSA2000 family.
Optional Disk
enclosures Just as the user has a choice of chassis for the array head (LFF and
SFF drive bays), so also do they have a choice of expansion disk
enclosures accommodating either drive size. (NOTE: these are not
supported as part of a NEBS-certified with the MSA Carrier Grade
Chassis.)
MSA2000 3.5-inch drive enclosure. This 2U unit has twelve LFF (3.5-
inch) drive bays and accepts for MSA2 dual-ported SAS and SATA
drives. One model (AJ749A) has a single I/O module that matches with
a single controller array head, giving a single path to the drives. The
second model (AJ750A) comes standard with two I/O modules
installed, required when paired with a dual controller array head, giving
two paths to the drives for higher availability.
This 3.5-inch drive enclosure can be attached to either the LFF or
SFF MSA2000sa G2 array head.
Each model ships standard with two .6m SAS to SAS cables for
cascading to other MSA2000 drive enclosures
For connection to either form-factor MSA2300sa array head,
miniSAS to SAS cable(s) must be purchased.
The single I/O model can be upgraded to a dual model with the
purchase of an additional MSA2000 Drive Enclosure I/O module
(AJ751A). No cable is included with this upgrade.
Up to four MSA2000 3.5-inch enclosures can be attached to an
MSA2300i controller in the array head.
MSA70 2.5-inch drive enclosure. This 2U storage enclosure (418800-
B21) is designed to support twenty five ProLiant 2.5-inch Universal form
factor (SFF) SAS or SATA hard drives. It ships standard with a single
I/O module installed.
This 2.5-inch drive enclosure can be attached behind either LFF
or SFF MSA2000sa G2 Array head.
The MSA70 enclosure ships with a single .5m miniSAS to
miniSAS cable.
To support a dual controller MSA2000sa G2 array head, the user
needs to purchase and install an MSA70 Dual Domain I/O
Module (AG779A). This option ships standard with an additional
.5m miniSAS to miniSAS cable.
Up to three MSA70s may be attached to the array head, given
total support for 99 SFF drives.
Scalability The MSA2300sa 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 7.2 TB SAS or
6.0 TB SATA. With the addition of three MSA70 JBODs, the
MSA2000sa G2 can support 29.7 TB SAS or 24.7 TB SATA.
QuickSpecs
HP StorageWorks 2000sa G2 Modular Smart Array
Family Information
DA - 13331 Worldwide QuickSpecs — Version 2 — 7.31.2009 Page 7