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Cisco ASA 5500-X Series Next-Generation Firewalls

Cisco ASA Compatibility

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Table of Contents

Cisco ASA Compatibility

ASA and ASDM Compatibility

Current Models

Legacy Models

ASA and VPN Compatibility

ASA 5500 and Module Compatibility

Current Models

Legacy Models

ASA Services Module and Switch Compatibility

ASAv Hypervisor Compatibility

ASA 1000V Compatibility

ASA Memory Information

Memory Requirements

Memory Kits

Viewing Flash Memory

DRAM, Flash Memory, and Failover or ASA Clustering

Cisco ASA Compatibility

Updated: July 24, 2014

 

This document lists the Cisco ASA software and hardware compatibility and requirements.

ASA and ASDM Compatibility

Current Models

 

Table 1 ASA and ASDM Compatibility: Current Models

ASA OS
ASDM
ASA Model:
ASA 5505
ASA 5512-X, 5515-X, 5525-X, 5545-X, 5555-X
ASA 5585-X
ASASM
ASAv
ASA 1000V

ASA 7.0

ASDM 5.0. Recommended: 5.0(8).

No

No

No

No

No

No

ASA 7.1(1)

ASDM 5.1. Recommended: 5.1(2).

No

No

No

No

No

No

ASA 7.1(2)

ASDM 5.1(2)

No

No

No

No

No

No

ASA 7.2

ASDM 5.2. Recommended: 5.2(4).

YES

No

No

No

No

No

ASA 8.0(2)

ASDM 6.0(2) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.0(3)

ASDM 6.0(3) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.0(4)

ASDM 6.1(3) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.0(5)

ASDM 6.2(3) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.1(1)

ASDM 6.1(1) and later. Recommended: 7.3(1).

No

No

No

No

No

No

ASA 8.1(2)

ASDM 6.1(5) and later. Recommended: 7.3(1).

No

No

No

No

No

No

ASA 8.2(1)

ASDM 6.2(1) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.2(2)

ASDM 6.2(5) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.2(3)

ASDM 6.3(4) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.2(4)

ASDM 6.3(5) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.2(5)

ASDM 6.4(3) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.3(1)

ASDM 6.3(1) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.3(2)

ASDM 6.3(2) and later. Recommended: 7.3(1).

YES

No

No

No

No

No

ASA 8.4(1)

ASDM 6.4(1) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.4(2)

ASDM 6.4(5) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.4(3)

ASDM 6.4(7) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.4(4.1)1

ASDM 6.4(9) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.4(5)

ASDM 7.0(2) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.4(6)

ASDM 7.1(2.102) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.4(7)

ASDM 7.1(3) and later. Recommended: 7.3(1).

YES

No

YES

No

No

No

ASA 8.5(1)

ASDM 6.5(1).

No

No

No

YES

No

No

ASA 8.6(1)

ASDM 6.6(1).

No

YES

No

No

No

No

ASA 8.7(1.1)2

ASDM 6.7(1).

No

No

No

No

No

YES

ASA 9.0(1)

ASDM 7.0(1) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.0(2)

ASDM 7.1(2) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.0(3)

ASDM 7.1(3) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.1(1)

ASDM 7.1(1) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.1(2)

ASDM 7.1(3) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.1(3)

ASDM 7.1(4) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.1(4)

ASDM 7.1(5) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.1(5)

ASDM 7.1(6) and later. Recommended: 7.3(1).

YES

YES

YES

YES

No

No

ASA 9.2(1)

ASDM 7.2(1) and later. Recommended: 7.3(1).

YES

YES

YES

YES

YES

No

ASA 9.2(2)

ASDM 7.2(2). and later. Recommended: 7.3(1).

YES

YES

YES

YES

YES

No

ASA 9.3(1)

ASDM 7.3(1).

No

YES

YES

YES

YES

No

1.Version 8.4(4) was removed from Cisco.com due to build issues; please upgrade to Version 8.4(4.1) or later.

2.Version 8.7(1) was removed from Cisco.com due to build issues; please upgrade to Version 8.7(1.1) or later.

Legacy Models

 

Table 2 ASA and ASDM Compatibility: Legacy Models

ASA OS
ASDM
ASA Model:
ASA 5510, 5520, 5540
ASA 5550
ASA 5580

ASA 7.0

ASDM 5.0. Recommended: 5.0(8).

YES

No

No

ASA 7.1(1)

ASDM 5.1. Recommended: 5.1(2).

YES

No

No

ASA 7.1(2)

ASDM 5.1(2)

YES

YES

No

ASA 7.2

ASDM 5.2. Recommended: 5.2(4).

YES

YES

No

ASA 8.0(2)

ASDM 6.0(2) and later. Recommended: 7.3(1).

YES

YES

No

ASA 8.0(3)

ASDM 6.0(3) and later. Recommended: 7.3(1).

YES

YES

No

ASA 8.0(4)

ASDM 6.1(3) and later. Recommended: 7.3(1).

YES

YES

No

ASA 8.0(5)

ASDM 6.2(3) and later. Recommended: 7.3(1).

YES

YES

No

ASA 8.1(1)

ASDM 6.1(1) and later. Recommended: 7.3(1).

No

No

YES

ASA 8.1(2)

ASDM 6.1(5) and later. Recommended: 7.3(1).

No

No

YES

ASA 8.2(1)

ASDM 6.2(1) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.2(2)

ASDM 6.2(5) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.2(3)

ASDM 6.3(4) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.2(4)

ASDM 6.3(5) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.2(5)

ASDM 6.4(3) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.3(1)

ASDM 6.3(1) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.3(2)

ASDM 6.3(2) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(1)

ASDM 6.4(1) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(2)

ASDM 6.4(5) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(3)

ASDM 6.4(7) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(4.1)3

ASDM 6.4(9) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(5)

ASDM 7.0(2) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(6)

ASDM 7.1(2.102) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.4(7)

ASDM 7.1(3) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 8.5(1)

ASDM 6.5(1).

No

No

No

ASA 8.6(1)

ASDM 6.6(1).

No

No

No

ASA 8.7(1.1)4

ASDM 6.7(1).

No

No

No

ASA 9.0(1)

ASDM 7.0(1) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.0(2)

ASDM 7.1(2) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.0(3)

ASDM 7.1(3) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.1(1)

ASDM 7.1(1) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.1(2)

ASDM 7.1(3) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.1(3)

ASDM 7.1(4) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.1(4)

ASDM 7.1(5) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.1(5)

ASDM 7.1(6) and later. Recommended: 7.3(1).

YES

YES

YES

ASA 9.2(1)

ASDM 7.2(1) and later. Recommended: 7.3(1).

No

No

No

ASA 9.2(2) and later

ASDM 7.2(2). and later. Recommended: 7.3(1).

No

No

No

3.Version 8.4(4) was removed from Cisco.com due to build issues; please upgrade to Version 8.4(4.1) or later.

4.Version 8.7(1) was removed from Cisco.com due to build issues; please upgrade to Version 8.7(1.1) or later.

ASA 5500 and Module Compatibility

Current Models

Table 3 shows the modules supported on each ASA model. To see the ASDM versions supported for each ASA version on your model, see the “ASA and ASDM Compatibility” section.

 

Table 3 ASA Module Compatibility

ASA Model
Modules Supported
Module OS
ASA OS 5

ASA 5505

ASA Advanced Inspection and Prevention (AIP) SSC-5

6.26

ASA 8.2(1) and later

ASA 5512-X, 5515-X, 5525-X, 5545-X, 5555-X

ASA IPS SSP software module

7.1(3)

ASA 8.6(1) and later

7.2

ASA 8.6(1) and later

ASA CX SSP software module

Requirements: Cisco solid state drive (SSD)

9.1

ASA 9.1(1) and later

9.2

ASA 9.1(3)

ASA 5585-X7

ASA SSP-20 and -60

Requirements: Single ASA SSP in slot 0

(See ASA OS)

ASA 8.2(3) and later; 8.4(1) and later.

ASA SSP-10 and -40

Requirements: Single ASA SSP in slot 0

(See ASA OS)

ASA 8.2(4) and later; 8.4(1) and later.

ASA IPS SSP-10, -20, -40, and -60

Requirements: Install in slot 1, with matching-level ASA SSP in slot 0

7.1

ASA 8.2(5)8 and later; 8.4(2) and later.

7.2

ASA 8.2(5) and later; 8.4(2) and later.

Dual ASA SSPs for ASA SSP-40 and ASA SSP-60

Requirements: Matching-level for both SSPs

(See ASA OS)

ASA 8.4(2) and later

Dual ASA SSPs for ASA SSP-10 and ASA SSP-20

Requirements: Matching-level for both SSPs

(See ASA OS)

ASA 9.0(1) and later

ASA CX SSP-10 and -20

Requirements: Install in slot 1, with matching-level ASA SSP in slot 0

9.0

ASA 8.4(4.1) and later.

9.1

ASA 9.1(1) and later.

9.2

ASA 9.1(3)

ASA CX SSP-40 and -60

Requirements: Install in slot 1, with matching-level ASA SSP in slot 0

9.2

ASA 9.1(3)

  • ASA 4-port 10G Network Module
  • ASA 8-port 10G Network Module
  • ASA 20-port 1G Network Module

Requirements: Install one or two network modules in slot 1, with ASA SSP in slot 0:

N/A

ASA 8.4(4.1) and later; 9.1(2).

5.ASA Version 8.1 is supported only on the ASA 5580, which does not support modules.

6.IPS 7.0 and later is not supported on the AIP SSC.

7.The 5585-X is supported in 8.2 and 8.4; it is not supported in 8.3.

8.ASA IPS SSP support was added in interim release 8.2(4.4); however, this table does not list interim releases when there is a recommended maintenance release that you should use instead.

Legacy Models

Table 3 shows the modules supported on each ASA model. To see the ASDM versions supported for each ASA version on your model, see the “ASA and ASDM Compatibility” section.

 

Table 4 ASA Module Compatibility

ASA Model
Modules Supported
Module OS
ASA OS 9

ASA 5510

ASA AIP SSM-10

5.010

ASA 7.0(1) and later

5.1 3 , 11

ASA 7.0(1) and later

6.0

ASA 7.2(1) and later

6.1

ASA 8.0(2) and later

6.2

ASA 8.0(2) and later

7.0

ASA 8.0(2) and later

7.1

ASA 8.0(2) and later

ASA Content Security and Control (CSC) SSM-10 and -20

6.0

ASA 7.1(1)

6.1

ASA 7.1(1) and later

6.2

ASA 7.1(1) and later

6.312

ASA 7.1(1) and later

6.6

ASA 8.4(2) and later.
Versions earlier than 8.4.2 are supported; however, HTTPS filtering is not possible.

ASA 4GE SSM

N/A

ASA 7.0(4) and later

ASA 5520

ASA AIP SSM-10 and -20

5.0 3

ASA 7.0(1) and later

5.1 3 , 4

ASA 7.0(1) and later

6.0

ASA 7.2(1) and later

6.1

ASA 8.0(2) and later

6.2

ASA 8.0(2) and later

7.0

ASA 8.0(2) and later

7.1

ASA 8.0(2) and later

ASA AIP SSM-40

6.0(4)

ASA 8.0(4) and later

6.1

ASA 8.0(4) and later

6.2

ASA 8.0(4) and later

7.0

ASA 8.0(4) and later

7.1

ASA 8.0(4) and later

ASA CSC SSM-10 and -20

6.0

ASA 7.1(1)

6.1

ASA 7.1(2) and later

6.2

ASA 7.2(1) and later

6.3 5

ASA 7.2(1) and later

6.6

ASA 8.4(2) and later.
Versions earlier than 8.4(2) are supported; however, HTTPS filtering is not possible.

ASA 4GE SSM

N/A

ASA 7.0(4) and later

ASA 5540

ASA AIP SSM-20

5.0 3

ASA 7.0(1) and later

5.1 3 , 4

ASA 7.0(1) and later

6.0

ASA 7.2(1) and later

6.1

ASA 8.0(2) and later

6.2

ASA 8.0(2) and later

7.0

ASA 8.0(2) and later

7.1

ASA 8.0(2) and later

ASA AIP SSM-40

6.0(4)

ASA 8.0(4) and later

6.1

ASA 8.0(4) and later

6.2

ASA 8.0(4) and later

7.0

ASA 8.0(4) and later

7.1

ASA 8.0(4) and later

ASA CSC SSM-10 and -20

6.0

ASA 7.1(1)

6.1

ASA 7.1(2) and later

6.2

ASA 7.2(1) and later

6.3 5

ASA 7.2(1) and later

6.6

ASA 8.4(2) and later.
Versions earlier than 8.4(2) are supported; however, HTTPS filtering is not possible.

ASA 4GE SSM

N/A

ASA 7.0(4) and later

ASA 5550

No support (the ASA 4GE SSM is built-in and not user-removable)

N/A

N/A

ASA 5580

No support

N/A

N/A

9.ASA Version 8.1 is supported only on the ASA 5580, which does not support modules.

10.ASDM 5.2 and later lets you launch IDM from ASDM to manage IPS release 5.0 and 5.1. For natively-integrated management, use IPS 6.0 and later.

11.IPS 5.1(4) is the minimum version that supports signature updates.

12.ASDM 5.2 and above lets you launch Trend Micro Content Security from ASDM to manage CSC 6.0, 6.1, and 6.2. For natively-integrated management, use CSC 6.3 and above with ASDM 6.2(3) and above.

ASA Services Module and Switch Compatibility

Table 5 shows the switch hardware and software compatibility.

 

Table 5 Support for the ASASM

ASA Release
Switch Hardware
Supervisor Engine or Route Switch Processor
Cisco IOS Release

8.5(1) and later

Catalyst 6500-E

SUP 720-10GE with MSFC3 & PFC3C (VS-S720-10G-3C)

12.2(33)SXJ213 and later

SUP 720-10GE with MSFC3 & PFC3CXL (VS-S720-10G-3CXL)

SUP 720 with MSFC3 & PFC3B (WS-SUP720-3B)

SUP 720 with MSFC3 & PFC3BXL (WS-SUP720-3BXL)

8.5(1.7) and later

Catalyst 6500-E

SUP 2T with MSFC5 & PFC4 (VS-S2T-10G)

15.0(1)SY1 and later

SUP 2T with MSFC5 & PFC4XL (VS-S2T-10G-XL)

8.5(1) and later

Catalyst 6800 series

SUP 2T with MSFC5 & PFC4 (VS-S2T-10G)

15.1(2)SY1 and later

SUP 2T with MSFC5 & PFC4XL (VS-S2T-10G-XL)

9.0(1) and later

Cisco 7606-S, 7609-S

RSP 720 with 10GE ports, MSFC4 & PFC-3C (RSP720-3C-10GE)

15.2(4)S2 or later

RSP 720 with 10GE ports, MSFC4 & PFC-3CXL (RSP720-3CXL-10GE)

RSP 720 with 2GE ports, MSFC4 & PFC-3C (RSP720-3C-GE)

RSP 720 with 2GE ports, MSFC4 & PFC-3CXL (RSP720-3CXL-GE)

SUP 720 with MSFC3 & PFC3B (WS-SUP720-3B)

SUP 720 with MSFC3 & PFC3BXL (WS-SUP720-3BXL)

9.0(1) and later

Cisco 7604, 7609-S, 7613-S

SUP 2T with MSFC5 & PFC4 (VS-S2T-10G)

15.1(1)SY and later

SUP 2T with MSFC5 & PFC4XL (VS-S2T-10G-XL)

13.Originally-supported Cisco IOS Version 12.2(33)SXJ1 has a caveat (CSCts88817) that can cause the ASASM to reload under certain circumstances. Therefore, we recommend using Version 12.2(33)SXJ2 or later.

ASAv Hypervisor Compatibility

 

Table 6 ASAv Hypervisor Compatibility

ASAv OS
Hypervisor

ASA 9.2(1) and later

VMware vSphere 5.x:

  • ESXi Server
  • vCenter Server
  • vSphere Web Client or vSphere Client for Windows or Linux

ASA 1000V Compatibility

 

Table 7 ASA 1000V Compatibility

ASA 1000V OS
ASDM
Nexus 1000V OS, with VSM 14 and VEM 15
VNMC 16
VMware vCenter VSphere Hypervisor, Enterprise Plus
VMware vCenter Server and vSphere Client, Enterprise Plus

ASA 8.7(1.1)

ASDM 6.7(1)

Nexus 4.2(1)SV1(5.2)

VNMC 2.0

4.1, 5.0

4.1, 5.0

14.Virtual Supervisor Module.

15.Virtual Ethernet Module.

16.Cisco Virtual Network Management Center.

ASA Memory Information

The ASA includes DRAM (also referred to as DIMM) and internal flash memory. On some models, you can optionally use an external flash memory as well. This section includes the following topics:

Memory Requirements

Table 8 lists the standard and recommended flash memory and DRAM, as well as how the DRAM is allocated to firewall/VPN functionality and module functionality.

The ASA 5500-X models can run a software module such as the ASA IPS or ASA CX alongside the ASA firewall and VPN functions. For these models, DRAM is evenly and statically distributed between the Firewall/VPN functionality and the software module functionality, with 50% allocated to each. Memory for the software module is reserved even if you are not running a software module; you cannot use that memory for firewall and VPN functions. For other models with hardware modules, such as the ASA 5585-X, the modules include their own memory, so all of the ASA memory is used for firewall and VPN.

Note that the shipping DRAM increased after February 2010; the DRAM requirements for 8.3 and higher match the newer default shipping sizes. The newer default shipping DRAM is the current maximum DRAM you can install in your unit. See the “Memory Kits” section to order an upgrade kit.


NoteASA 5520s and ASA 5540s manufactured before August 2011 have four DIMM sockets. ASA 5520s and ASA 5540s manufactured after this date have two DIMM sockets. All ASA 5550s have four DIMM sockets. ASA 5520s and ASA 5540s manufactured before August 2011 have four DIMM sockets. ASA 5520s and ASA 5540s manufactured after this date have two DIMM sockets. All ASA 5550s have four DIMM sockets.



NoteIf a memory change might be required, the required memory is presented in If a memory change might be required, the required memory is presented in bold type. See the “Memory Kits” section.


 

Table 8 Standard Memory and Memory Requirements for the Cisco ASA Series

ASA Model
Internal Flash Memory (Default Shipping) 17 , 18
Total DRAM (Default Shipping)
DRAM Allocated to FW/VPN
DRAM Allocated to Module
Before Feb. 2010
After Feb. 2010 (Required for 8.3 and Higher)

5505

128 MB

256 MB

512 MB 19

512 MB

On module

5510

256 MB

256 MB

1 GB

1 GB

On module

5520

256 MB

512 MB

2 GB

2 GB

On module

5540

256 MB

1 GB

2 GB

2 GB

On module

5550

256 MB

4 GB

4 GB

4 GB

On module

5512-X

4 GB

N/A

4 GB

2 GB

2 GB

5515-X

8 GB

N/A

8 GB

4 GB

4 GB

5525-X

8 GB

N/A

8 GB

4 GB

4 GB

5545-X

8 GB

N/A

12 GB

6 GB

6 GB

5555-X

8 GB

N/A

16 GB

8 GB

8 GB

5580-20

1 GB

8 GB

8 GB

8 GB

N/A

5580-40

1 GB

12 GB

12 GB

12 GB

N/A

5585-X with SSP-10

2 GB

N/A

6 GB

6 GB

On module

5585-X with SSP-20

2 GB

N/A

12 GB

12 GB

On module

5585-X with SSP-40

2 GB

N/A

12 GB

12 GB

On module

5585-X with SSP-60

2 GB

N/A

24 GB

24 GB

On module

ASASM

8 GB

N/A

24 GB

24 GB

N/A

17.For the ASA 5510 through 5550, you might need to upgrade the internal flash memory to 512 MB or add external flash memory if you load multiple images of the AnyConnect client along with one or more images of the ASA software, ASDM, client/server plugins, or Cisco Secure Desktop. In particular, you might need to upgrade for multiple AnyConnect 3.0 and higher clients with optional modules. The ASA 5505 does not have a flash memory upgrade available.

18.The default internal flash memory for some models was 64 MB in the past; if you have one of these early units, we recommend upgrading your flash memory to at least the new shipping default.

19.For the ASA 5505 with Version 8.3 through 9.1, only the Unlimited Hosts license and the Security Plus license with failover enabled require 512 MB; other licenses can use 256 MB. For Version 9.2 and later, all ASA 5505 licenses require 512 MB.

Memory Kits

Table 9 lists the DRAM (also referred to as DIMM) kits.

 

Table 9 DRAM Kits

Model
Size
Part Number

ASA 5505

512 MB

ASA5505-MEM-512=

ASA 551020

1 GB

ASA5510-MEM-1GB=

ASA 5520

2 GB

ASA5520-MEM-2GB=

ASA 5540

2 GB

ASA5540-MEM-2GB=

ASA 5550

4 GB

2 x ASA5540-MEM-2GB=

20.If you previously purchased the 512 MB upgrade kit for the ASA 5510 (ASA5510-MEM-512=), you must upgrade to the 1 GB memory upgrade kit to run Version 8.3.

Table 10 lists the CompactFlash upgrade kits available for the ASA 5510 through ASA 5550, for use as internal or external flash memory.

 

Table 10 CompactFlash Upgrade Kits

Model
Size
Part Number

ASA 5510 through ASA 5550

256 MB

ASA5500-CF-256MB=

ASA 5510 through ASA 5550

512 MB

ASA5500-CF-512MB=

Viewing Flash Memory

You can check the size of internal flash and the amount of free flash memory on the ASA by doing the following:

  • ASDM—Choose Tools > File Management . The amounts of total and available flash memory appear on the bottom left in the pane.
  • CLI—In Privileged EXEC mode, enter the dir command. The amounts of total and available flash memory appear on the bottom of the output.

For example:

hostname # dir
Directory of disk0:/
 
43 -rwx 14358528 08:46:02 Feb 19 2007 cdisk.bin
136 -rwx 12456368 10:25:08 Feb 20 2007 asdmfile
58 -rwx 6342320 08:44:54 Feb 19 2007 asdm-600110.bin
61 -rwx 416354 11:50:58 Feb 07 2007 sslclient-win-1.1.3.173.pkg
62 -rwx 23689 08:48:04 Jan 30 2007 asa1_backup.cfg
66 -rwx 425 11:45:52 Dec 05 2006 anyconnect
70 -rwx 774 05:57:48 Nov 22 2006 cvcprofile.xml
71 -rwx 338 15:48:40 Nov 29 2006 tmpAsdmCustomization430406526
72 -rwx 32 09:35:40 Dec 08 2006 LOCAL-CA-SERVER.ser
73 -rwx 2205678 07:19:22 Jan 05 2007 vpn-win32-Release-2.0.0156-k9.pkg
74 -rwx 3380111 11:39:36 Feb 12 2007 securedesktop_asa_3_2_0_56.pkg
 
62881792 bytes total (3854336 bytes free)

 

DRAM, Flash Memory, and Failover or ASA Clustering

In a failover or cluster configuration, the units must have the same amount of DRAM. You do not have to have the same amount of flash memory. For more information, see the failover or clustering chapters in the configuration guide.


NoteIf you use units with different flash memory sizes, make sure that the units with the smaller flash memory has enough space for the software images and configuration files. If you use units with different flash memory sizes, make sure that the units with the smaller flash memory has enough space for the software images and configuration files.