Dell PowerEdge RAID Controller 10 User’s Guide PERC H345, H740P, H745, and H840 Series Controllers

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PERC card specifications

The table below lists and describes the different PERC cards that consist of the PERC 10 series and their specifications:

Table 1. PERC cardsThe following table lists and describes the different PERC cards that consist of the PERC 10 series and their specifications.
Feature	PERC H345	PERC H740P	PERC H745	PERC H745P MX	PERC H840
RAID levels	0, 1, 10	0, 1, 5, 6, 10, 50, 60	0, 1, 5, 6, 10, 50, 60	0, 1, 5, 6, 10, 50, 60	0, 1, 5, 6, 10, 50, 60
Non-RAID	Yes	Yes	Yes	Yes	N/A
Enclosures per port	Not applicable	Not applicable	Not applicable	Not applicable	4
Processor	Dell adapter SAS RAID-on-chip, 16-port with LSI 3416 chipset	Dell adapter SAS RAID-on-chip, 8-port with LSI 3508 chipset	Dell adapter SAS RAID-on-chip, 16-port with LSI 3516 chipset	Dell adapter SAS RAID-on-chip, 16-port with LSI 3516 chipset	Dell adapter SAS RAID-on-chip, 8-port with LSI 3508 chipset
Battery backup unit	No	Yes	Yes	Yes	Yes
eHBA	No	Yes	Yes	Yes	No
LKM security	No	Yes	Yes	Yes	Yes
Controller queue depth (RAID mode)	1536	4096	4096	3072	4096 with PD64 profile, 3072 with PD240 profile
Controller Queue Depth (eHBA)	N/A	5120	5120	5120	N/A
Enterprise key manager mode	No	Yes	Yes	No	No
Nonvolatile cache	No	Yes	Yes	Yes	Yes
Cache memory	N/A	8 GB DDR4 2133 Mhz cache	4 GB DDR4 2133 Mhz cache	8 GB DDR4 2133 Mhz cache	8 GB DDR4 2133 Mhz cache
Cache function	Write through and no read ahead.	Write back, write through, no read ahead, and read ahead.	Write back, write through, no read ahead, and read ahead.	Write back, write through, no read ahead, and read ahead.	Write back, write through, no read ahead, and read ahead.
Max no of VDs in RAID mode	32	64	64	240	240
Max no of disks in eHBA mode	Not applicable	240 (combination of virtual disks and Non-Raid disks).	240 (combination of virtual disks and Non-Raid disks)	240 ( combination of virtual disks and Non-Raid disks).	Not applicable
Max no of VDs per disk group	16	16	16	16	16
Max no of disk groups	32	64	64	240	240
Hot swap devices supported	Yes	Yes	Yes	Yes	Yes
Hardware XOR engine	Not applicable	Yes	Yes	Yes	Yes
Online capacity expansion	Yes in operating system only	Yes	Yes	Yes	Yes
Dedicated and global hot spare	Yes	Yes	Yes	Yes	Yes
Autoconfigure	N/A	RAID 0	RAID 0	RAID 0	RAID 0
Drives types	3 Gbps SATA, 6 Gbps SATA/SAS, and 12 Gbps SAS	3 Gbps SATA, 6 Gbps SATA/SAS, and 12 Gbps SAS	3 Gbps SATA, 6 Gbps SATA/SAS, and 12 Gbps SAS	3 Gbps SATA, 6 Gbps SATA/SAS, and 12 Gbps SAS	6 Gbps SAS, and 12 Gbps SAS
VD strip size	64 kB	64 kB, 128 kB, 256 kB, 512 kB, 1 MB	64 kB, 128 kB, 256 kB, 512 kB, 1 MB	64 kB, 128 kB, 256 kB, 51 2 kB, 1 MB	64 kB, 128 kB, 256 kB, 512 kB, 1 MB
PCIe support	Gen 3	Gen 3	Gen 3	Gen 3	Gen 3
Maximum drive support	Without SAS Expander: 16 per controller With SAS Expander: Limited by platform offering	Without SAS Expander: 8 drives per controller With SAS Expander: Limited by platform offering	Without SAS Expander: 16 drives per controller With SAS Expander: Limited by platform offering	Without SAS Expander: 16 drives per controller With SAS Expander: Limited by platform offering	240

NOTE:Enhanced HBA mode is supported from firmware version 50.5.0-1750 and later.

NOTE:Enterprise key manager mode is supported from firmware version 50.5.1-2633 and later.

NOTE:240 virtual disks can be created only within a PD240 profile, for more information see Profile Management.

NOTE:For information on number of drives in a disk group per virtual disk, see Summary of RAID levels.